# Peasy — Full Catalog > Easy peasy, done. Peasy provides free browser-based tools at https://peasytools.com/. All processing happens client-side — files never leave your device. ## Tools (251) ### Merge PDF Combine multiple PDF files into one document. Merge two or more PDF files into a single document. Drag and drop to reorder pages before combining. All processing happens in your browser — files are never uploaded. - URL: https://peasytools.com/pdf/merge-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload two or more PDF files 2. Drag to reorder if needed 3. Click Merge to combine them 4. Download the merged PDF ### Split PDF Extract specific pages from a PDF file. Extract selected pages from a PDF into a new file. Specify page ranges like 1-3, 5, 7-10 to create a custom document. Processing happens entirely in your browser. - URL: https://peasytools.com/pdf/split-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter page ranges (e.g., "1-3, 5, 7-10") 3. Click Split to extract the pages 4. Download the new PDF with selected pages ### Compress PDF Reduce PDF file size by optimizing internal structure. Reduce PDF file size by re-serializing and stripping unnecessary metadata. Client-side compression removes orphaned objects and optimizes the internal structure. For heavy compression (image downsampling), server tools are needed. - URL: https://peasytools.com/pdf/compress-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Choose whether to strip metadata 3. Click Compress 4. Download the optimized PDF ### Rotate PDF Rotate pages in a PDF by 90, 180, or 270 degrees. Rotate all or specific pages in a PDF document. Fix scanned documents, correct orientation, or prepare pages for printing. Choose 90°, 180°, or 270° clockwise rotation. - URL: https://peasytools.com/pdf/rotate-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Select rotation angle (90°, 180°, or 270°) 3. Optionally specify which pages to rotate 4. Click Rotate and download the result ### Add Page Numbers Add page numbers to every page of a PDF. Add page numbers to your PDF document in various positions and formats. Choose bottom-left, center, or right alignment. Supports formats like plain numbers, 'Page X', and 'X of Y'. - URL: https://peasytools.com/pdf/add-page-numbers/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Choose position (bottom-left, center, or right) 3. Select format (number, "Page X", or "X of Y") 4. Set the starting page number 5. Click Add Numbers and download ### PDF to JPG Convert PDF pages to high-quality JPEG images. Convert each page of a PDF document into a JPEG image. Adjust quality and resolution for the perfect output. Uses Mozilla's pdf.js for accurate rendering. - URL: https://peasytools.com/pdf/pdf-to-jpg/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Adjust quality (default: 85%) 3. Choose resolution scale (1x = 72 DPI, 2x = 144 DPI) 4. Click Convert 5. Download individual page images ### Watermark PDF Add a text watermark to PDF pages. Add a diagonal text watermark to all or specific pages in a PDF. Customize the text, opacity, rotation, color, and font size. Common uses include marking documents as CONFIDENTIAL, DRAFT, or SAMPLE. - URL: https://peasytools.com/pdf/watermark-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter watermark text (e.g. CONFIDENTIAL) 3. Adjust opacity, color, and rotation 4. Optionally specify which pages to watermark 5. Click Watermark and download the result ### Reorder PDF Pages Rearrange pages in a PDF to any order. Rearrange the pages of a PDF document into any order you want. Specify the new page sequence and download the reorganized file. Useful for fixing page order after scanning or reorganizing chapters. - URL: https://peasytools.com/pdf/reorder-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter the new page order (e.g. "3, 1, 2, 4-6") 3. Click Reorder to rearrange pages 4. Download the reorganized PDF ### Flatten PDF Flatten form fields into static PDF content. Convert interactive PDF form fields into static, non-editable content. Useful for archiving filled forms, preventing further edits, or fixing display issues with form fields in some PDF viewers. - URL: https://peasytools.com/pdf/flatten-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF with form fields 2. Click Flatten to merge fields into content 3. Download the flattened PDF ### Edit PDF Metadata Edit or remove PDF document properties. View, edit, or strip metadata from PDF files. Change the title, author, subject, and keywords, or remove all metadata for privacy. Useful for cleaning up documents before sharing. - URL: https://peasytools.com/pdf/edit-pdf-metadata/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Choose Edit mode to modify fields, or Strip mode to remove all metadata 3. In Edit mode, fill in the fields you want to change 4. Click Update Metadata and download the result ### Sign PDF Add a text signature stamp to a PDF. Add a text-based signature stamp to a PDF document. Include your name, title, or approval text with an optional date. The signature is placed at the bottom-right of the selected page. - URL: https://peasytools.com/pdf/sign-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter your signature text 3. Choose whether to include the date 4. Adjust font size and select the target page 5. Click Sign and download the signed PDF ### JPG to PDF Convert images to a PDF document. Convert JPEG, PNG, or WebP images into a single PDF document. Upload multiple images and they become pages in order. Choose page size (A4, Letter, or fit to image) and set margins. - URL: https://peasytools.com/pdf/jpg-to-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Choose page size: A4, Letter, or Fit to Image 3. Adjust margin if needed 4. Click Convert to create the PDF 5. Download the resulting PDF document ### Extract Text from PDF Extract all text content from a PDF document. Extract text from all or specific pages of a PDF document. The extracted text can be copied to clipboard or downloaded as a text file. Uses Mozilla's pdf.js for accurate text extraction. - URL: https://peasytools.com/pdf/extract-text-from-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Optionally specify which pages to extract 3. Click Extract to process the PDF 4. Copy the text or download as a .txt file ### Delete PDF Pages Remove unwanted pages from a PDF document. Remove specific pages from a PDF file. Enter page numbers or ranges to delete, and download a new PDF without those pages. All processing happens in your browser. - URL: https://peasytools.com/pdf/delete-pdf-pages/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter page numbers to delete (e.g., 1,3,5 or 2-4) 3. Click Delete to remove those pages 4. Download the trimmed PDF ### Reverse PDF Reverse the page order of a PDF document. Flip the page order of a PDF so the last page becomes the first. Useful for reversing scan order or preparing documents for specific printing workflows. All processing happens locally. - URL: https://peasytools.com/pdf/reverse-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Click Reverse to flip the page order 3. Download the reversed PDF ### Extract PDF Pages Extract specific pages into a new PDF. Pull out specific pages from a PDF and save them as a new document. Select individual pages or ranges to extract. All processing happens in your browser. - URL: https://peasytools.com/pdf/extract-pdf-pages/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter page numbers to extract (e.g., 1,3,5 or 2-8) 3. Click Extract to create a new PDF with those pages 4. Download the extracted PDF ### Extract Odd/Even Pages Extract only odd or even numbered pages. Extract only the odd-numbered pages (1, 3, 5...) or even-numbered pages (2, 4, 6...) from a PDF. Commonly used for duplex printing workflows or separating front/back pages of scanned documents. - URL: https://peasytools.com/pdf/odd-even-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Choose Odd Pages or Even Pages 3. Click Extract to create the filtered PDF 4. Download the result ### Resize PDF Pages Change PDF page dimensions to standard sizes. Change the page size of a PDF to standard dimensions like A4, Letter, Legal, A3, A5, or Tabloid. Useful for printing on different paper sizes or standardizing documents. All processing happens in your browser. - URL: https://peasytools.com/pdf/resize-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Select the target page size (A4, Letter, etc.) 3. Choose orientation (auto, portrait, or landscape) 4. Click Resize to apply 5. Download the resized PDF ### Crop PDF Crop margins from PDF pages. Trim margins from PDF pages by adjusting the crop box. Remove whitespace, headers, footers, or other unwanted areas from the edges of your pages. All processing happens locally. - URL: https://peasytools.com/pdf/crop-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Set the margin to crop from each edge (in points, 72 points = 1 inch) 3. Optionally specify which pages to crop 4. Click Crop to apply 5. Download the cropped PDF ### Insert Blank Pages Add blank pages at any position in a PDF. Insert one or more blank pages into a PDF at a specified position. Choose to match the existing page size or use a standard size. Useful for adding separator pages or space for notes. - URL: https://peasytools.com/pdf/insert-blank-pages/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Choose where to insert (start, end, or after a specific page) 3. Set how many blank pages to add 4. Choose the blank page size (match existing or standard) 5. Click Insert to add the pages 6. Download the modified PDF ### Duplicate PDF Pages Create copies of specific pages within a PDF. Duplicate specific pages in a PDF, creating multiple copies of each. Useful for creating printable labels, tickets, or repeating content within a document. - URL: https://peasytools.com/pdf/duplicate-pdf-pages/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter page numbers to duplicate (empty = all pages) 3. Set the number of copies per page 4. Click Duplicate to create the copies 5. Download the expanded PDF ### PDF to PNG Convert PDF pages to high-quality PNG images. Convert each page of a PDF to a PNG image with transparency support. PNG is ideal when you need lossless quality or transparent backgrounds. Adjust the render scale for higher resolution output. - URL: https://peasytools.com/pdf/pdf-to-png/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Adjust the render scale (higher = larger, more detailed images) 3. Optionally specify which pages to convert 4. Click Convert to render the pages 5. Download the PNG images ### Add Header & Footer Add custom header and footer text to PDF pages. Add header text at the top and/or footer text at the bottom of every page in a PDF. Useful for adding titles, dates, confidentiality notices, or copyright information. - URL: https://peasytools.com/pdf/pdf-header-footer/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter header text, footer text, or both 3. Adjust font size and margin if needed 4. Click Apply to add the text 5. Download the updated PDF ### Add Text to PDF Add text annotations at any position on PDF pages. Place custom text at any position on PDF pages. Specify the exact coordinates, font size, and color. Useful for adding labels, annotations, stamps, or filling in simple form fields. - URL: https://peasytools.com/pdf/add-text-to-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Enter the text to add 3. Set the position (x, y in points from the bottom-left corner) 4. Adjust font size and color 5. Optionally specify which pages to annotate 6. Click Add Text to apply 7. Download the annotated PDF ### Add Image to PDF Stamp or overlay an image on PDF pages. Place an image (JPEG or PNG) at any position on PDF pages. Use for adding logos, stamps, signatures, or decorative elements. Specify exact position and size. - URL: https://peasytools.com/pdf/add-image-to-pdf/ - Category: PDF Tools - Processing: client - Steps: 1. Upload a PDF file 2. Select an image to overlay (JPEG or PNG) 3. Set the position (x, y in points) and dimensions 4. Optionally specify which pages to stamp 5. Click Stamp to apply the image 6. Download the stamped PDF ### Password Generator Generate strong, random passwords Create cryptographically secure random passwords with customizable length, character sets, and complexity requirements. Uses Web Crypto API for true randomness. - URL: https://peasytools.com/safe/safe-password-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. Set your desired password length (8–128 characters) 2. Select character types: uppercase, lowercase, digits, symbols 3. Click Generate to create a secure password 4. Review the entropy and estimated crack time 5. Copy the password to your clipboard ### Password Strength Checker Analyze password strength and vulnerability Evaluate password strength with detailed scoring, pattern detection, and actionable improvement suggestions. Checks against common password lists. - URL: https://peasytools.com/safe/password-strength/ - Category: Privacy & Security - Processing: client - Steps: 1. Enter or paste a password to analyze 2. View the strength score (0–100) and grade 3. Check detected patterns and weaknesses 4. Follow improvement suggestions ### Hash Generator Generate SHA and other cryptographic hashes Compute cryptographic hash digests of any text using SHA-1, SHA-256, SHA-384, or SHA-512. Output in hex or Base64 format. - URL: https://peasytools.com/safe/safe-hash-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. Enter or paste text to hash 2. Select the hash algorithm (SHA-256 recommended) 3. Choose output format: hex or Base64 4. Click Hash to generate the digest 5. Copy the hash value ### HMAC Generator Generate keyed-hash message authentication codes Compute HMAC (Hash-based Message Authentication Code) using a secret key. Supports SHA-256 and SHA-512 algorithms. - URL: https://peasytools.com/safe/hmac-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. Enter the message to authenticate 2. Enter your secret key in the second input 3. Select HMAC algorithm (SHA-256 or SHA-512) 4. Click Generate to compute the HMAC 5. Copy the HMAC value ### AES Encrypt / Decrypt Encrypt and decrypt text with AES-256-GCM Encrypt text with AES-256-GCM authenticated encryption using a password. Decrypt previously encrypted messages with the same password. - URL: https://peasytools.com/safe/aes-encrypt/ - Category: Privacy & Security - Processing: client - Steps: 1. Enter the text to encrypt (or ciphertext to decrypt) 2. Enter your password in the second input 3. Select Encrypt or Decrypt mode 4. Click to process 5. Copy the result — share it safely ### Random String Generator Generate cryptographically secure random strings Generate random strings with customizable length, character sets, and formats. Uses Web Crypto API for true cryptographic randomness. - URL: https://peasytools.com/safe/random-string/ - Category: Privacy & Security - Processing: client - Steps: 1. Set the desired string length 2. Choose a character set: alphanumeric, hex, base64, or custom 3. Click Generate to create random strings 4. Copy the result ### CSP Header Generator Build Content Security Policy headers Build Content-Security-Policy headers with an interactive form. Generates HTTP header, meta tag, Nginx, and Apache configurations. - URL: https://peasytools.com/safe/csp-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. Set source values for each CSP directive 2. Use 'self' for same-origin, specific domains, or 'none' to block 3. Click Generate to build the CSP header 4. Copy the configuration for your server type 5. Test the policy with browser DevTools ### Text Redactor Redact sensitive information from text Automatically detect and redact sensitive information including emails, phone numbers, SSNs, credit card numbers, and IP addresses. - URL: https://peasytools.com/safe/text-redactor/ - Category: Privacy & Security - Processing: client - Steps: 1. Paste text containing sensitive information 2. Select which PII types to redact 3. Optionally customize the replacement text 4. Click Redact to process 5. Copy the redacted text ### CORS Header Generator Build Cross-Origin Resource Sharing configurations Generate CORS (Cross-Origin Resource Sharing) configurations for Nginx, Express.js, Apache, and Django. Control which domains can access your API. - URL: https://peasytools.com/safe/cors-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. Enter allowed origin(s) or use * for any origin 2. Select allowed HTTP methods 3. Specify allowed request headers 4. Configure credentials and max-age 5. Click Generate and copy the config for your server ### SRI Hash Generator Generate Subresource Integrity hashes Generate Subresource Integrity (SRI) hashes for script and link tags. Verify that CDN-hosted resources have not been tampered with. - URL: https://peasytools.com/safe/sri-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. Paste the content of your JS or CSS file 2. Select the hash algorithm (SHA-384 recommended) 3. Choose output format: integrity attribute or full HTML tag 4. Click Generate to compute the SRI hash 5. Add the integrity attribute to your HTML tags ### Base64 Encoder / Decoder Encode and decode Base64 with URL-safe variants Encode text to Base64 or decode Base64 strings. Supports standard (RFC 4648) and URL-safe variants. Shows data URI format, byte size, and encoding overhead. - URL: https://peasytools.com/safe/base64-encoder-decoder/ - Category: Privacy & Security - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. t 11. e 12. x 13. t 14. 15. t 16. o 17. 18. e 19. n 20. c 21. o 22. d 23. e 24. 25. o 26. r 27. 28. a 29. 30. B 31. a 32. s 33. e 34. 6 35. 4 36. 37. s 38. t 39. r 40. i 41. n 42. g 43. 44. t 45. o 46. 47. d 48. e 49. c 50. o 51. d 52. e 53. 54. 2 55. . 56. 57. M 58. o 59. d 60. e 61. 62. i 63. s 64. 65. a 66. u 67. t 68. o 69. - 70. d 71. e 72. t 73. e 74. c 75. t 76. e 77. d 78. 79. ( 80. o 81. r 82. 83. c 84. h 85. o 86. o 87. s 88. e 89. 90. e 91. n 92. c 93. o 94. d 95. e 96. / 97. d 98. e 99. c 100. o 101. d 102. e 103. ) 104. 105. 3 106. . 107. 108. V 109. i 110. e 111. w 112. 113. s 114. t 115. a 116. n 117. d 118. a 119. r 120. d 121. 122. a 123. n 124. d 125. 126. U 127. R 128. L 129. - 130. s 131. a 132. f 133. e 134. 135. B 136. a 137. s 138. e 139. 6 140. 4 141. 142. v 143. a 144. r 145. i 146. a 147. n 148. t 149. s 150. 151. 4 152. . 153. 154. C 155. o 156. p 157. y 158. 159. t 160. h 161. e 162. 163. r 164. e 165. s 166. u 167. l 168. t 169. 170. o 171. r 172. 173. d 174. a 175. t 176. a 177. 178. U 179. R 180. I 181. 182. f 183. o 184. r 185. m 186. a 187. t ### JWT Decoder Decode and inspect JSON Web Tokens Parse JWT tokens to inspect header, payload, and signature. Shows all standard claims with descriptions, expiration status, and algorithm information. - URL: https://peasytools.com/safe/jwt-decoder/ - Category: Privacy & Security - Processing: client - Steps: 1. 1 2. . 3. 4. P 5. a 6. s 7. t 8. e 9. 10. a 11. 12. J 13. W 14. T 15. 16. t 17. o 18. k 19. e 20. n 21. 22. ( 23. h 24. e 25. a 26. d 27. e 28. r 29. . 30. p 31. a 32. y 33. l 34. o 35. a 36. d 37. . 38. s 39. i 40. g 41. n 42. a 43. t 44. u 45. r 46. e 47. ) 48. 49. 2 50. . 51. 52. V 53. i 54. e 55. w 56. 57. d 58. e 59. c 60. o 61. d 62. e 63. d 64. 65. h 66. e 67. a 68. d 69. e 70. r 71. 72. ( 73. a 74. l 75. g 76. o 77. r 78. i 79. t 80. h 81. m 82. , 83. 84. t 85. y 86. p 87. e 88. , 89. 90. k 91. e 92. y 93. 94. I 95. D 96. ) 97. 98. 3 99. . 100. 101. I 102. n 103. s 104. p 105. e 106. c 107. t 108. 109. p 110. a 111. y 112. l 113. o 114. a 115. d 116. 117. c 118. l 119. a 120. i 121. m 122. s 123. 124. w 125. i 126. t 127. h 128. 129. e 130. x 131. p 132. l 133. a 134. n 135. a 136. t 137. i 138. o 139. n 140. s 141. 142. 4 143. . 144. 145. C 146. h 147. e 148. c 149. k 150. 151. e 152. x 153. p 154. i 155. r 156. a 157. t 158. i 159. o 160. n 161. 162. s 163. t 164. a 165. t 166. u 167. s 168. 169. a 170. n 171. d 172. 173. t 174. i 175. m 176. i 177. n 178. g ### UUID Generator Generate and validate UUIDs (v4 random) Generate cryptographically random UUID v4 identifiers. Validate and parse existing UUIDs. Shows version, variant, and multiple format variations. - URL: https://peasytools.com/safe/uuid-generator/ - Category: Privacy & Security - Processing: client - Steps: 1. 1 2. . 3. 4. L 5. e 6. a 7. v 8. e 9. 10. e 11. m 12. p 13. t 14. y 15. 16. t 17. o 18. 19. g 20. e 21. n 22. e 23. r 24. a 25. t 26. e 27. 28. n 29. e 30. w 31. 32. U 33. U 34. I 35. D 36. ( 37. s 38. ) 39. , 40. 41. o 42. r 43. 44. p 45. a 46. s 47. t 48. e 49. 50. o 51. n 52. e 53. 54. t 55. o 56. 57. v 58. a 59. l 60. i 61. d 62. a 63. t 64. e 65. 66. 2 67. . 68. 69. S 70. e 71. t 72. 73. c 74. o 75. u 76. n 77. t 78. 79. t 80. o 81. 82. g 83. e 84. n 85. e 86. r 87. a 88. t 89. e 90. 91. m 92. u 93. l 94. t 95. i 96. p 97. l 98. e 99. 100. U 101. U 102. I 103. D 104. s 105. 106. a 107. t 108. 109. o 110. n 111. c 112. e 113. 114. 3 115. . 116. 117. V 118. i 119. e 120. w 121. 122. f 123. o 124. r 125. m 126. a 127. t 128. 129. v 130. a 131. r 132. i 133. a 134. t 135. i 136. o 137. n 138. s 139. 140. ( 141. s 142. t 143. a 144. n 145. d 146. a 147. r 148. d 149. , 150. 151. n 152. o 153. - 154. d 155. a 156. s 157. h 158. e 159. s 160. , 161. 162. u 163. p 164. p 165. e 166. r 167. c 168. a 169. s 170. e 171. , 172. 173. U 174. R 175. N 176. ) 177. 178. 4 179. . 180. 181. C 182. o 183. p 184. y 185. 186. a 187. n 188. y 189. 190. f 191. o 192. r 193. m 194. a 195. t ### TOTP Configurator Configure Time-Based One-Time Password (TOTP) parameters and generate otpauth:// URIs for authenticator apps. Calculate token windows and validate settings. - URL: https://peasytools.com/safe/totp-configurator/ - Category: Privacy & Security - Processing: client ### SSL Certificate Decoder Decode and analyze PEM-encoded SSL/TLS certificates. View subject, issuer, validity period, key details, extensions, and certificate chain information. - URL: https://peasytools.com/safe/ssl-certificate-decoder/ - Category: Privacy & Security - Processing: client ### Social Character Counter Count characters against platform limits Count characters, words, and lines against character limits for Twitter/X, LinkedIn, Instagram, TikTok, YouTube, Facebook, Pinterest, and Threads. - URL: https://peasytools.com/social/social-char-counter/ - Category: Social Media Tools - Processing: client - Steps: 1. Paste or type your social media post 2. View character counts for all platforms at once 3. Check which platforms your text fits within 4. See hashtag, mention, URL, and emoji counts ### Hashtag Extractor & Generator Extract or generate hashtags from text Extract existing hashtags from social media text, or generate relevant hashtags from keywords. Supports multiple output formats and case styles. - URL: https://peasytools.com/social/social-hashtag-tool/ - Category: Social Media Tools - Processing: client - Steps: 1. Choose Extract or Generate mode 2. Paste text with hashtags (extract) or enter keywords (generate) 3. Select output format and case style 4. Click to process and copy the results ### Social Mention Extractor Extract @mentions, #hashtags, URLs, and emails Parse social media text and extract all references: @mentions, #hashtags, URLs, and email addresses. Get a clean summary of all social elements. - URL: https://peasytools.com/social/social-mention-extractor/ - Category: Social Media Tools - Processing: client - Steps: 1. Paste social media text or a post draft 2. View extracted mentions, hashtags, URLs, and emails 3. Copy individual categories or the plain text version ### Thread Splitter Split long text into thread-sized posts Split long text into numbered thread posts that respect platform character limits. Splits at sentence boundaries for natural reading flow. - URL: https://peasytools.com/social/social-thread-splitter/ - Category: Social Media Tools - Processing: client - Steps: 1. Paste your long-form text 2. Choose the target platform (Twitter 280, Threads 500, etc.) 3. Select numbering style and separator 4. Click Split to create the thread 5. Copy each post individually or the entire thread ### Emoji Remover & Extractor Strip, extract, or replace emojis in text Remove emojis from text for clean formatting, extract only emojis for analysis, or replace emojis with custom text markers. - URL: https://peasytools.com/social/social-emoji-tool/ - Category: Social Media Tools - Processing: client - Steps: 1. Paste text containing emojis 2. Choose mode: strip, extract, or replace 3. For replace mode, enter your replacement text 4. Click to process and copy the result ### Bio Formatter Format social media bios with separators Format your social media bio with Unicode separators like bullets, pipes, diamonds, and arrows. Check character limits for each platform. - URL: https://peasytools.com/social/social-bio-formatter/ - Category: Social Media Tools - Processing: client - Steps: 1. Enter bio items, one per line 2. Choose a separator style 3. Select join mode (single line or keep breaks) 4. Check platform character limit compliance 5. Copy the formatted bio ### CTA Generator Generate call-to-action phrases for social posts Generate engaging call-to-action phrases for social media posts. Categories include follow, share, engage, visit, and subscribe CTAs. - URL: https://peasytools.com/social/social-cta-generator/ - Category: Social Media Tools - Processing: client - Steps: 1. Select a CTA category or use all 2. Enter your topic or niche 3. Choose how many CTAs to generate 4. Click Generate and pick your favorites 5. Copy and add to your social posts ### Engagement Analyzer Score your post for engagement potential Analyze social media post text for engagement potential. Scores your post based on questions, CTAs, emojis, hashtags, readability, and length. - URL: https://peasytools.com/social/social-engagement-analyzer/ - Category: Social Media Tools - Processing: client - Steps: 1. Paste your social media post draft 2. Select your target platform 3. View the engagement score and factor breakdown 4. Follow suggestions to improve your score 5. Iterate until you reach a high score ### Post Preview Preview how your post looks across all social platforms See how your social media post fits within character limits for Twitter, LinkedIn, Instagram, Facebook, TikTok, Threads, Mastodon, and YouTube. - URL: https://peasytools.com/social/social-post-preview/ - Category: Social Media Tools - Processing: client - Steps: 1. Type or paste your post text 2. Choose a specific platform or view all at once 3. Check character counts and fold-point previews 4. Adjust your post to fit within each platform's limits ### UTM Link Builder Build campaign tracking URLs with UTM parameters Generate UTM-tagged URLs for tracking social media campaigns in Google Analytics. Use presets for common platforms or customize all five UTM parameters. - URL: https://peasytools.com/social/social-utm-builder/ - Category: Social Media Tools - Processing: client - Steps: 1. Enter your destination URL 2. Select a preset (Google Ads, Facebook, etc.) or use custom 3. Fill in campaign name and optional term/content fields 4. Copy the generated UTM URL for your campaign ### Handle Checker Check username format across 11 social platforms Enter a username to see profile URLs for Twitter/X, Instagram, GitHub, LinkedIn, TikTok, YouTube, Reddit, Pinterest, Mastodon, Threads, and Bluesky. Validates format per platform. - URL: https://peasytools.com/social/social-handle-checker/ - Category: Social Media Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. u 13. s 14. e 15. r 16. n 17. a 18. m 19. e 20. 21. o 22. r 23. 24. h 25. a 26. n 27. d 28. l 29. e 30. 31. ( 32. w 33. i 34. t 35. h 36. 37. o 38. r 39. 40. w 41. i 42. t 43. h 44. o 45. u 46. t 47. 48. @ 49. ) 50. 51. 2 52. . 53. 54. V 55. i 56. e 57. w 58. 59. p 60. r 61. o 62. f 63. i 64. l 65. e 66. 67. U 68. R 69. L 70. s 71. 72. f 73. o 74. r 75. 76. a 77. l 78. l 79. 80. s 81. u 82. p 83. p 84. o 85. r 86. t 87. e 88. d 89. 90. p 91. l 92. a 93. t 94. f 95. o 96. r 97. m 98. s 99. 100. 3 101. . 102. 103. C 104. h 105. e 106. c 107. k 108. 109. w 110. h 111. i 112. c 113. h 114. 115. p 116. l 117. a 118. t 119. f 120. o 121. r 122. m 123. s 124. 125. a 126. c 127. c 128. e 129. p 130. t 131. 132. t 133. h 134. e 135. 136. h 137. a 138. n 139. d 140. l 141. e 142. 143. f 144. o 145. r 146. m 147. a 148. t 149. 150. 4 151. . 152. 153. C 154. o 155. p 156. y 157. 158. a 159. n 160. y 161. 162. p 163. r 164. o 165. f 166. i 167. l 168. e 169. 170. U 171. R 172. L ### Image Size Guide Social media image dimensions for every platform Complete reference for social media image sizes: profile photos, covers, posts, stories, and ads. Covers Twitter/X, Facebook, Instagram, LinkedIn, Pinterest, YouTube, TikTok, and Snapchat. - URL: https://peasytools.com/social/social-image-size-guide/ - Category: Social Media Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. p 13. l 14. a 15. t 16. f 17. o 18. r 19. m 20. 21. n 22. a 23. m 24. e 25. 26. o 27. r 28. 29. l 30. e 31. a 32. v 33. e 34. 35. e 36. m 37. p 38. t 39. y 40. 41. f 42. o 43. r 44. 45. a 46. l 47. l 48. 49. 2 50. . 51. 52. B 53. r 54. o 55. w 56. s 57. e 58. 59. d 60. i 61. m 62. e 63. n 64. s 65. i 66. o 67. n 68. s 69. 70. f 71. o 72. r 73. 74. e 75. a 76. c 77. h 78. 79. i 80. m 81. a 82. g 83. e 84. 85. t 86. y 87. p 88. e 89. 90. 3 91. . 92. 93. N 94. o 95. t 96. e 97. 98. a 99. s 100. p 101. e 102. c 103. t 104. 105. r 106. a 107. t 108. i 109. o 110. s 111. 112. a 113. n 114. d 115. 116. f 117. i 118. l 119. e 120. 121. s 122. i 123. z 124. e 125. 126. l 127. i 128. m 129. i 130. t 131. s 132. 133. 4 134. . 135. 136. U 137. s 138. e 139. 140. a 141. s 142. 143. r 144. e 145. f 146. e 147. r 148. e 149. n 150. c 151. e 152. 153. w 154. h 155. e 156. n 157. 158. c 159. r 160. e 161. a 162. t 163. i 164. n 165. g 166. 167. s 168. o 169. c 170. i 171. a 172. l 173. 174. m 175. e 176. d 177. i 178. a 179. 180. g 181. r 182. a 183. p 184. h 185. i 186. c 187. s ### Best Posting Times Optimal posting schedule by platform and day Research-based guide to the best posting times for Twitter/X, Instagram, Facebook, LinkedIn, TikTok, YouTube, and Pinterest. Includes day-of-week analysis and engagement tips. - URL: https://peasytools.com/social/social-best-posting-times/ - Category: Social Media Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. p 13. l 14. a 15. t 16. f 17. o 18. r 19. m 20. 21. n 22. a 23. m 24. e 25. 26. o 27. r 28. 29. l 30. e 31. a 32. v 33. e 34. 35. e 36. m 37. p 38. t 39. y 40. 41. f 42. o 43. r 44. 45. a 46. l 47. l 48. 49. 2 50. . 51. 52. V 53. i 54. e 55. w 56. 57. b 58. e 59. s 60. t 61. 62. p 63. o 64. s 65. t 66. i 67. n 68. g 69. 70. t 71. i 72. m 73. e 74. s 75. 76. b 77. y 78. 79. d 80. a 81. y 82. 83. o 84. f 85. 86. w 87. e 88. e 89. k 90. 91. 3 92. . 93. 94. R 95. e 96. v 97. i 98. e 99. w 100. 101. e 102. n 103. g 104. a 105. g 106. e 107. m 108. e 109. n 110. t 111. 112. t 113. i 114. p 115. s 116. 117. p 118. e 119. r 120. 121. p 122. l 123. a 124. t 125. f 126. o 127. r 128. m 129. 130. 4 131. . 132. 133. P 134. l 135. a 136. n 137. 138. y 139. o 140. u 141. r 142. 143. c 144. o 145. n 146. t 147. e 148. n 149. t 150. 151. c 152. a 153. l 154. e 155. n 156. d 157. a 158. r 159. 160. a 161. c 162. c 163. o 164. r 165. d 166. i 167. n 168. g 169. l 170. y ### Thread Splitter Split long text into numbered thread posts for Twitter/X, Mastodon, Bluesky, and Threads. Smart splitting at sentence boundaries with character counting. - URL: https://peasytools.com/social/thread-splitter/ - Category: Social Media Tools - Processing: client ### Caption & Alt Text Formatter Generate accessible alt text and optimized captions for social media images. Platform-specific formatting with hashtag integration and accessibility best practices. - URL: https://peasytools.com/social/caption-formatter/ - Category: Social Media Tools - Processing: client ### Fake Data Generator Generate realistic placeholder personal data — names, emails, phone numbers, addresses, companies, and job titles. Output as plain text, JSON, or CSV. - URL: https://peasytools.com/gen/gen-fake-data/ - Category: Generator Tools - Processing: client ### Mock JSON Generator Generate mock JSON data with realistic schemas — users, products, blog posts, events, and orders. Perfect for API prototyping and frontend development. - URL: https://peasytools.com/gen/gen-mock-json/ - Category: Generator Tools - Processing: client ### Username Generator Generate creative usernames in 8 styles — CamelCase, underscore, dot notation, leet speak, all caps, verb combos, and more. - URL: https://peasytools.com/gen/gen-username/ - Category: Generator Tools - Processing: client ### Color Palette Generator Generate harmonious 5-color palettes using color theory — complementary, analogous, triadic, monochromatic, pastel, and earth tones. Includes CSS and Tailwind output. - URL: https://peasytools.com/gen/gen-color-palette/ - Category: Generator Tools - Processing: client ### Lorem Markup Generator Generate Lorem Ipsum with HTML or Markdown formatting — headings, paragraphs, lists, blockquotes, bold, italic, and code spans. - URL: https://peasytools.com/gen/gen-lorem-markup/ - Category: Generator Tools - Processing: client ### Random Number Generator Generate random numbers, roll dice, flip coins, draw lottery numbers, or shuffle lists. Uses crypto.getRandomValues() for true randomness. - URL: https://peasytools.com/gen/gen-number/ - Category: Generator Tools - Processing: client ### CSV Data Generator Generate random CSV data with configurable columns — names, emails, phone numbers, dates, companies, cities, amounts, and more. Export with custom delimiters. - URL: https://peasytools.com/gen/gen-csv-data/ - Category: Generator Tools - Processing: client ### Random Date Generator Generate random dates within a configurable range. Output in 6 formats: ISO, US, EU, long text, Unix timestamp, or relative time. - URL: https://peasytools.com/gen/gen-random-dates/ - Category: Generator Tools - Processing: client ### Email Address Generator Generate random email addresses in multiple styles — professional, simple, nickname, and corporate. Choose domain targeting for realistic test data. - URL: https://peasytools.com/gen/gen-email-addresses/ - Category: Generator Tools - Processing: client ### Avatar Generator Generate initial-based SVG avatars from names. Choose shapes (circle, square, rounded), background styles (solid, gradient, pastel, dark, brand), and colors. - URL: https://peasytools.com/gen/gen-avatar-svg/ - Category: Generator Tools - Processing: client ### Cron Expression Builder Build and parse cron schedule expressions Bidirectional cron tool: parse expressions to human-readable text, or describe a schedule in plain English to generate the cron syntax. Shows next 5 run times. - URL: https://peasytools.com/gen/gen-cron-expression/ - Category: Generator Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. c 13. r 14. o 15. n 16. 17. e 18. x 19. p 20. r 21. e 22. s 23. s 24. i 25. o 26. n 27. 28. ( 29. e 30. . 31. g 32. . 33. , 34. 35. ' 36. 0 37. 38. * 39. / 40. 2 41. 42. * 43. 44. * 45. 46. * 47. ' 48. ) 49. 50. t 51. o 52. 53. p 54. a 55. r 56. s 57. e 58. 59. i 60. t 61. 62. 2 63. . 64. 65. O 66. r 67. 68. d 69. e 70. s 71. c 72. r 73. i 74. b 75. e 76. 77. a 78. 79. s 80. c 81. h 82. e 83. d 84. u 85. l 86. e 87. 88. ( 89. e 90. . 91. g 92. . 93. , 94. 95. ' 96. e 97. v 98. e 99. r 100. y 101. 102. w 103. e 104. e 105. k 106. d 107. a 108. y 109. 110. a 111. t 112. 113. 9 114. a 115. m 116. ' 117. ) 118. 119. 3 120. . 121. 122. V 123. i 124. e 125. w 126. 127. h 128. u 129. m 130. a 131. n 132. - 133. r 134. e 135. a 136. d 137. a 138. b 139. l 140. e 141. 142. e 143. x 144. p 145. l 146. a 147. n 148. a 149. t 150. i 151. o 152. n 153. 154. a 155. n 156. d 157. 158. n 159. e 160. x 161. t 162. 163. r 164. u 165. n 166. 167. t 168. i 169. m 170. e 171. s 172. 173. 4 174. . 175. 176. C 177. o 178. p 179. y 180. 181. t 182. h 183. e 184. 185. c 186. r 187. o 188. n 189. 190. e 191. x 192. p 193. r 194. e 195. s 196. s 197. i 198. o 199. n ### API Key Generator Generate secure API keys and tokens in various formats Generate cryptographically random API keys in multiple formats: hex, base62, UUID-based with prefix, bearer tokens, and AWS-style access keys. Shows entropy bits per format. - URL: https://peasytools.com/gen/gen-api-key/ - Category: Generator Tools - Processing: client - Steps: 1. 1 2. . 3. 4. S 5. e 6. l 7. e 8. c 9. t 10. 11. a 12. 13. k 14. e 15. y 16. 17. f 18. o 19. r 20. m 21. a 22. t 23. 24. ( 25. h 26. e 27. x 28. , 29. 30. b 31. a 32. s 33. e 34. 6 35. 2 36. , 37. 38. U 39. U 40. I 41. D 42. , 43. 44. b 45. e 46. a 47. r 48. e 49. r 50. , 51. 52. A 53. W 54. S 55. - 56. s 57. t 58. y 59. l 60. e 61. ) 62. 63. 2 64. . 65. 66. O 67. p 68. t 69. i 70. o 71. n 72. a 73. l 74. l 75. y 76. 77. a 78. d 79. d 80. 81. a 82. 83. p 84. r 85. e 86. f 87. i 88. x 89. 90. ( 91. e 92. . 93. g 94. . 95. , 96. 97. p 98. k 99. _ 100. t 101. e 102. s 103. t 104. _ 105. ) 106. 107. 3 108. . 109. 110. S 111. e 112. t 113. 114. c 115. o 116. u 117. n 118. t 119. 120. t 121. o 122. 123. g 124. e 125. n 126. e 127. r 128. a 129. t 130. e 131. 132. m 133. u 134. l 135. t 136. i 137. p 138. l 139. e 140. 141. k 142. e 143. y 144. s 145. 146. 4 147. . 148. 149. C 150. o 151. p 152. y 153. 154. k 155. e 156. y 157. s 158. 159. — 160. 161. g 162. e 163. n 164. e 165. r 166. a 167. t 168. e 169. d 170. 171. s 172. e 173. c 174. u 175. r 176. e 177. l 178. y 179. 180. w 181. i 182. t 183. h 184. 185. c 186. r 187. y 188. p 189. t 190. o 191. . 192. g 193. e 194. t 195. R 196. a 197. n 198. d 199. o 200. m 201. V 202. a 203. l 204. u 205. e 206. s 207. ( 208. ) ### Short ID Generator Generate nanoid-style short unique identifiers Generate compact, URL-safe unique IDs like nanoid. Configurable length, alphabet, and collision probability estimation. Supports URL-safe, hex, alphanumeric, and no-ambiguous character sets. - URL: https://peasytools.com/gen/gen-short-id/ - Category: Generator Tools - Processing: client - Steps: 1. 1 2. . 3. 4. S 5. e 6. t 7. 8. I 9. D 10. 11. l 12. e 13. n 14. g 15. t 16. h 17. 18. ( 19. d 20. e 21. f 22. a 23. u 24. l 25. t 26. 27. 2 28. 1 29. 30. c 31. h 32. a 33. r 34. a 35. c 36. t 37. e 38. r 39. s 40. ) 41. 42. 2 43. . 44. 45. C 46. h 47. o 48. o 49. s 50. e 51. 52. a 53. n 54. 55. a 56. l 57. p 58. h 59. a 60. b 61. e 62. t 63. 64. p 65. r 66. e 67. s 68. e 69. t 70. 71. o 72. r 73. 74. c 75. u 76. s 77. t 78. o 79. m 80. 81. c 82. h 83. a 84. r 85. a 86. c 87. t 88. e 89. r 90. s 91. 92. 3 93. . 94. 95. G 96. e 97. n 98. e 99. r 100. a 101. t 102. e 103. 104. o 105. n 106. e 107. 108. o 109. r 110. 111. m 112. a 113. n 114. y 115. 116. I 117. D 118. s 119. 120. ( 121. u 122. p 123. 124. t 125. o 126. 127. 5 128. 0 129. ) 130. 131. 4 132. . 133. 134. R 135. e 136. v 137. i 138. e 139. w 140. 141. c 142. o 143. l 144. l 145. i 146. s 147. i 148. o 149. n 150. 151. p 152. r 153. o 154. b 155. a 156. b 157. i 158. l 159. i 160. t 161. y 162. 163. a 164. n 165. d 166. 167. e 168. n 169. t 170. r 171. o 172. p 173. y ### Regex Tester Test regular expressions with real-time matching Test regular expressions against input text with real-time match highlighting. View capture groups, named groups, and match positions. Common pattern library included. - URL: https://peasytools.com/gen/regex-tester/ - Category: Generator Tools - Processing: client - Steps: 1. Enter a regex pattern in the Pattern field 2. Set flags (g for global, i for case-insensitive, m for multiline) 3. Choose an action: Match, Match All, Replace, or Split 4. Enter test text in the input area 5. Click Test to see results ### URL Slug Generator Generate clean, SEO-friendly URL slugs from any text. Transliteration for accented characters, multiple output formats (kebab, snake, camelCase), and URL previews. - URL: https://peasytools.com/gen/url-slug-generator/ - Category: Generator Tools - Processing: client ### CSS Minifier Remove comments, whitespace, and redundant characters from CSS to reduce file size. - URL: https://peasytools.com/css/css-minify/ - Category: CSS Tools - Processing: client ### CSS Beautifier Format and indent CSS code with proper spacing, brace placement, and comment preservation. - URL: https://peasytools.com/css/css-beautify/ - Category: CSS Tools - Processing: client ### CSS Gradient Generator Generate beautiful CSS gradients with 16 presets — linear, radial, and conic with vendor prefixes and Tailwind output. - URL: https://peasytools.com/css/css-gradient/ - Category: CSS Tools - Processing: client ### CSS Box Shadow Generator Generate box-shadow CSS from 12 presets — subtle, neon, neumorphism, material design, and more with Tailwind mapping. - URL: https://peasytools.com/css/css-shadow/ - Category: CSS Tools - Processing: client ### CSS Flexbox Generator Generate flexbox container and item CSS with direction, alignment, wrapping, gap, and Tailwind HTML output. - URL: https://peasytools.com/css/css-flexbox/ - Category: CSS Tools - Processing: client ### CSS Grid Generator Generate CSS Grid layouts with column/row sizing presets — equal, auto-fill, sidebar, holy grail — plus responsive Tailwind. - URL: https://peasytools.com/css/css-grid/ - Category: CSS Tools - Processing: client ### CSS Animation Generator Generate @keyframes and animation CSS for 15 effects — fade, slide, bounce, spin, heartbeat, and more with Tailwind output. - URL: https://peasytools.com/css/css-animation/ - Category: CSS Tools - Processing: client ### CSS Border Radius Generator Generate border-radius CSS with 17 presets — pill, blob, leaf, drop, ticket — with shorthand optimization and Tailwind output. - URL: https://peasytools.com/css/css-border-radius/ - Category: CSS Tools - Processing: client ### CSS Text Shadow Generator Generate text-shadow CSS from 10 presets — neon glow, retro layers, emboss, 3D, outline, and fire effects. - URL: https://peasytools.com/css/css-text-shadow/ - Category: CSS Tools - Processing: client ### CSS Transform Generator Generate CSS transform combinations — translate, rotate, scale, skew, and perspective — with modern CSS and Tailwind output. - URL: https://peasytools.com/css/css-transform/ - Category: CSS Tools - Processing: client ### Compress Image Reduce image file size while keeping quality. Compress JPEG, PNG, and WebP images directly in your browser. Adjust quality settings to find the perfect balance between file size and visual quality. Your images never leave your device. - URL: https://peasytools.com/image/compress-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Adjust the quality slider — lower values produce smaller files 3. Optionally change the output format (WebP often gives the best compression) 4. Click Compress to process your images 5. Download the compressed results individually ### CSS Unit Converter Convert between px, rem, em, %, vw, vh, pt, cm, mm, and in Convert CSS units with configurable base font size and viewport dimensions. Shows all conversions with formulas and CSS usage examples. - URL: https://peasytools.com/css/css-unit-converter/ - Category: CSS Tools - Processing: client - Steps: 1. Enter a value with its unit (e.g., 16px, 1.5rem, 100%) 2. Adjust base font size and viewport dimensions if needed 3. View the conversion table showing all equivalent values 4. Copy the unit you need for your CSS ### CSS Color Converter Convert colors between hex, RGB, HSL, HWB, and named CSS colors Parse any CSS color format and convert to all other formats. Includes WCAG contrast checks and luminance analysis. - URL: https://peasytools.com/css/css-color-converter/ - Category: CSS Tools - Processing: client - Steps: 1. Enter a color in any format (hex, rgb, hsl, or named color) 2. View all equivalent color format representations 3. Check WCAG contrast ratios against white and black 4. Copy the format you need for your CSS ### Media Query Generator Generate responsive CSS media queries with device presets Create CSS media queries with mobile-first, desktop-first, device-specific, and print presets. Includes visual breakpoint diagrams. - URL: https://peasytools.com/css/css-media-query-generator/ - Category: CSS Tools - Processing: client - Steps: 1. Choose a preset: mobile-first, desktop-first, device, or print 2. For custom queries, set min-width, max-width, and orientation 3. Review the generated @media rules with placeholder content 4. Copy the CSS into your stylesheet ### CSS Filter Effects Generate CSS filter effects with 10 presets including grayscale, sepia, vintage, blur, and more. Preview individual filter values and combine them for custom effects. - URL: https://peasytools.com/css/css-filter-effects/ - Category: CSS Tools - Processing: client ### CSS Clip-Path Generator Generate CSS clip-path shapes with 15 geometric presets including triangles, stars, hexagons, and arrows. Custom polygon support with animated transition variants. - URL: https://peasytools.com/css/css-clip-path/ - Category: CSS Tools - Processing: client ### Resize Image Resize images by dimensions, percentage, or longest side. Resize JPEG, PNG, and WebP images to exact dimensions, a percentage of the original, or by constraining the longest side. Maintains aspect ratio by default. All processing happens locally in your browser. - URL: https://peasytools.com/image/resize-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Choose a resize mode: exact dimensions, percentage, or longest side 3. Enter your target values (e.g. 800×600, 50%, or 1200px longest side) 4. Click Resize to process your images 5. Download the resized results ### Crop Image Crop images to preset aspect ratios or custom dimensions. Crop JPEG, PNG, and WebP images to standard aspect ratios (1:1 square, 16:9 widescreen, 4:3, 3:2) or specify custom crop dimensions. The crop is always centered on the image. - URL: https://peasytools.com/image/crop-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Choose an aspect ratio (1:1, 16:9, 4:3, etc.) or select Custom 3. For custom mode, enter the exact crop width and height in pixels 4. Click Crop to process your images 5. Download the cropped results ### Rotate Image Rotate images 90°, 180°, or 270° clockwise. Rotate JPEG, PNG, and WebP images by 90, 180, or 270 degrees clockwise. Fix sideways photos from cameras or phones. All processing happens in your browser. - URL: https://peasytools.com/image/rotate-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Select the rotation angle: 90°, 180°, or 270° clockwise 3. Click Rotate to process your images 4. Download the rotated results ### Flip Image Flip images horizontally (mirror) or vertically. Flip JPEG, PNG, and WebP images horizontally (mirror effect), vertically, or both. Useful for creating mirror images, fixing selfie mirrors, or preparing images for print. - URL: https://peasytools.com/image/flip-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Choose flip direction: horizontal (mirror), vertical, or both 3. Click Flip to process your images 4. Download the flipped results ### Convert Image Convert images between JPEG, PNG, and WebP formats. Convert images between JPEG, PNG, and WebP formats in your browser. Switch from PNG to WebP for smaller files, convert WebP to JPEG for compatibility, or save as PNG for lossless quality. - URL: https://peasytools.com/image/convert-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Select the output format: WebP, JPEG, or PNG 3. Adjust the quality slider for JPEG and WebP output 4. Click Convert to process your images 5. Download the converted files ### Watermark Image Add text watermarks to protect your images. Add text watermarks to JPEG, PNG, and WebP images directly in your browser. Customize the text, opacity, color, and layout. Choose between a single centered watermark or a repeating tiled pattern. - URL: https://peasytools.com/image/watermark-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Enter your watermark text (e.g. your name, CONFIDENTIAL, DRAFT) 3. Adjust opacity, color, and rotation 4. Choose single centered or repeating tiled watermark 5. Click Watermark to process your images 6. Download the watermarked results ### SVG to PNG Convert SVG vector graphics to PNG raster images. Convert SVG files to high-resolution PNG images in your browser. Scale up to 4x for crisp results on retina displays. Choose transparent or colored backgrounds. - URL: https://peasytools.com/image/svg-to-png/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more SVG files 2. Choose a scale factor (1x, 2x, 3x, or 4x) 3. Select a background (transparent, white, or black) 4. Click Convert to generate PNG images 5. Download the PNG results ### Image to Base64 Encode images as Base64 text for embedding in code. Convert images to Base64-encoded text strings directly in your browser. Useful for embedding small images in HTML, CSS, JSON, or API payloads without separate file hosting. - URL: https://peasytools.com/image/image-to-base64/ - Category: Image Tools - Processing: client - Steps: 1. Upload an image (JPEG, PNG, WebP, GIF, SVG, or BMP) 2. Choose whether to include the data URI prefix 3. Optionally enable line wrapping for MIME format 4. Click Convert to generate the Base64 text 5. Download the text file or copy the output ### Round Corners Add rounded corners to images with transparent backgrounds. Add rounded corners to JPEG, PNG, and WebP images. Adjust the corner radius from subtle rounding to full circle. Output is always PNG to preserve the transparent corners. - URL: https://peasytools.com/image/round-corners/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Adjust the corner radius slider (0% = square, 50% = circle) 3. Click Round to process your images 4. Download the rounded PNG results ### Add Border Add a solid color border or frame around images. Add a solid-color border (padding/frame) around JPEG, PNG, and WebP images. Choose any border color and width. Useful for social media posts, product photos, or creating framed prints. - URL: https://peasytools.com/image/add-border/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Set the border width in pixels 3. Pick a border color using the color picker 4. Click Add Border to process your images 5. Download the bordered results ### Image Filters Apply visual filters like grayscale, sepia, and vintage. Apply visual filters to JPEG, PNG, and WebP images in your browser. Choose from presets like grayscale, sepia, invert, vintage, cold, and warm. Adjust the intensity to fine-tune the effect. - URL: https://peasytools.com/image/image-filters/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Select a filter preset (grayscale, sepia, invert, vintage, cold, warm) 3. Adjust the intensity slider to control the effect strength 4. Click Apply to process your images 5. Download the filtered results ### Adjust Image Fine-tune brightness, contrast, saturation, and hue. Adjust brightness, contrast, saturation, and hue of JPEG, PNG, and WebP images with precise slider controls. Fix underexposed photos, boost colors, or create artistic effects — all in your browser. - URL: https://peasytools.com/image/adjust-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Adjust brightness, contrast, saturation, and hue sliders 3. 100% is the original value for brightness/contrast/saturation 4. Click Adjust to process your images 5. Download the adjusted results ### Blur Image Apply Gaussian blur to images with adjustable radius. Apply Gaussian blur to JPEG, PNG, and WebP images directly in your browser. Adjust the blur radius from subtle softening to heavy blur. Useful for background effects, privacy masking, or artistic photography. - URL: https://peasytools.com/image/blur-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Adjust the blur radius slider (1-50 pixels) 3. Click Blur to process your images 4. Download the blurred results ### Sharpen Image Sharpen images using an unsharp mask convolution kernel. Sharpen JPEG, PNG, and WebP images using a convolution kernel. Enhance edges and details in slightly blurry or soft photos. Adjust the sharpening amount from subtle to strong. - URL: https://peasytools.com/image/sharpen-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Adjust the sharpening amount slider (1-100%) 3. Click Sharpen to process your images 4. Download the sharpened results ### Make Square Pad images to a perfect square with a background color. Pad JPEG, PNG, and WebP images to a perfect square, centered on a configurable background color. Ideal for social media profile pictures, product photos, and icon preparation. - URL: https://peasytools.com/image/make-square/ - Category: Image Tools - Processing: client - Steps: 1. Upload one or more images (JPEG, PNG, or WebP) 2. Choose a background color (default: white) 3. Click Make Square to process your images 4. Download the squared results ### Grayscale Image Convert images to black and white. Remove all color from an image, producing a classic black-and-white photograph. Adjust intensity from subtle desaturation to full grayscale. All processing happens in your browser — images never leave your device. - URL: https://peasytools.com/image/grayscale-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload a JPEG, PNG, or WebP image 2. Adjust the intensity slider (0% = no change, 100% = full grayscale) 3. Click Convert to apply the grayscale effect 4. Download your black-and-white image ### Sepia Image Apply a warm vintage sepia tone to your photos. Give your photos a warm, brownish tone reminiscent of old photographs. The sepia effect adds a vintage aesthetic that works beautifully for portraits, landscapes, and nostalgic designs. All processing happens in your browser. - URL: https://peasytools.com/image/sepia-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload a JPEG, PNG, or WebP image 2. Adjust the sepia intensity (0% = no effect, 100% = full sepia) 3. Click Apply to process your image 4. Download the sepia-toned result ### Pixelate Image Apply a pixelation mosaic effect to images. Create a pixelated mosaic effect by reducing image detail into larger color blocks. Useful for anonymizing faces or license plates in screenshots, or creating retro pixel art style effects. All processing happens in your browser. - URL: https://peasytools.com/image/pixelate-image/ - Category: Image Tools - Processing: client - Steps: 1. Upload a JPEG, PNG, or WebP image 2. Adjust the block size — larger values create bigger pixels 3. Click Pixelate to apply the effect 4. Download the pixelated image ### Strip Image Metadata Remove EXIF data, GPS location, and camera info from photos. Remove all metadata from your images including EXIF data, GPS coordinates, camera model, timestamps, and other embedded information. Essential for privacy before sharing photos online. All processing happens in your browser — images never leave your device. - URL: https://peasytools.com/image/strip-metadata/ - Category: Image Tools - Processing: client - Steps: 1. Upload a JPEG, PNG, or WebP image 2. Adjust the output quality if needed (higher = better quality, larger file) 3. Click Clean to strip all metadata 4. Download the clean image with no embedded data ### Color Palette Generator Generate harmonious color palettes using color theory. Choose from analogous, complementary, triadic, split-complementary, tetradic, and monochromatic harmonies. - URL: https://peasytools.com/design/design-palette/ - Category: Design Tools - Processing: client ### Type Scale Generator Generate modular typographic scales using mathematical ratios. Creates consistent heading and body text sizes for harmonious typography. - URL: https://peasytools.com/design/design-typography/ - Category: Design Tools - Processing: client ### Spacing Scale Generator Generate consistent spacing systems for layouts. Choose from Tailwind, linear, Fibonacci, or power-of-2 scales with visual previews. - URL: https://peasytools.com/design/design-spacing/ - Category: Design Tools - Processing: client ### Responsive Breakpoints Generate responsive breakpoint systems for CSS media queries. Includes Tailwind, Bootstrap, and Material Design presets with container query support. - URL: https://peasytools.com/design/design-breakpoints/ - Category: Design Tools - Processing: client ### Aspect Ratio Calculator Calculate aspect ratios from dimensions. Shows the simplified ratio, decimal value, CSS property, and common sizes at the same ratio. - URL: https://peasytools.com/design/design-aspect-ratio/ - Category: Design Tools - Processing: client ### Color Shade Generator Generate a complete shade scale (50-950) from any base color. Creates Tailwind-compatible scales with WCAG contrast ratios for each shade. - URL: https://peasytools.com/design/design-color-shades/ - Category: Design Tools - Processing: client ### Font Pairing Suggestions Discover harmonious font combinations for headings and body text. Get 15 curated Google Fonts pairings with CSS import code and Tailwind config. - URL: https://peasytools.com/design/design-font-pair/ - Category: Design Tools - Processing: client ### Contrast Checker Check WCAG 2.1 contrast ratios between foreground and background colors. Validates AA and AAA compliance for both normal and large text. - URL: https://peasytools.com/design/design-contrast/ - Category: Design Tools - Processing: client ### Design Tokens Generator Generate complete design token sets with colors, spacing, font sizes, and border radius. Choose from minimal, corporate, or playful presets. - URL: https://peasytools.com/design/design-tokens/ - Category: Design Tools - Processing: client ### Social Media Size Guide Quick reference for image dimensions across Instagram, Twitter/X, Facebook, YouTube, LinkedIn, and Open Graph. All sizes updated for 2026. - URL: https://peasytools.com/design/design-media-sizes/ - Category: Design Tools - Processing: client ### Golden Ratio Calculator Calculate golden ratio proportions for layouts, typography, and spacing Apply the golden ratio (1.618) to any dimension for harmonious design. Generates Fibonacci sizing scales, layout splits, and typography hierarchies. - URL: https://peasytools.com/design/design-golden-ratio-calculator/ - Category: Design Tools - Processing: client - Steps: 1. Enter a base dimension (e.g., 1200 for a container width) 2. Choose a unit and scaling mode 3. Review the golden ratio proportions and Fibonacci scale 4. Apply the suggested splits to your layout and typography ### App Icon Size Guide Complete icon size requirements for iOS, Android, Web, Windows, and macOS Reference guide for all required app icon and favicon sizes across platforms. Includes filename conventions, density labels, and export checklist. - URL: https://peasytools.com/design/design-icon-size-guide/ - Category: Design Tools - Processing: client - Steps: 1. Enter your project name (optional) 2. Select a platform or view all platforms 3. Review the required sizes, filenames, and contexts 4. Use the checklist to ensure you have all required assets ### Shadow System Generator Generate elevation shadow systems in Material, Tailwind, or custom style Create consistent shadow/elevation scales for your design system. Material Design, Tailwind, or custom progressive shadows with CSS output. - URL: https://peasytools.com/design/design-shadow-generator/ - Category: Design Tools - Processing: client - Steps: 1. Choose a shadow style: Material, Tailwind, or custom 2. Set the number of elevation levels (1-10) 3. Customize shadow color and maximum blur (for custom style) 4. Copy the CSS custom properties or individual shadow values ### Multi-Stop Gradient Generator Generate complex CSS gradients with multiple color stops. 12 beautiful presets including sunset, ocean, aurora, and neon. Linear, radial, and conic gradient types. - URL: https://peasytools.com/design/gradient-generator/ - Category: Design Tools - Processing: client ### CSS Pattern Generator Generate repeating CSS background patterns using pure gradients. 12 patterns including stripes, dots, grid, checkerboard, zigzag, diamonds, and waves. - URL: https://peasytools.com/design/css-pattern-generator/ - Category: Design Tools - Processing: client ### Resolution Reference Complete reference guide for video resolutions from 360p to 8K. Includes pixel dimensions, aspect ratios, megapixel counts, and typical bitrate recommendations. - URL: https://peasytools.com/video/video-resolution/ - Category: Video Tools - Processing: client ### Bitrate Calculator Calculate recommended video bitrates and estimated file sizes for H.264, H.265, VP9, and AV1 codecs at multiple quality tiers. - URL: https://peasytools.com/video/video-bitrate/ - Category: Video Tools - Processing: client ### Frame Rate Converter Calculate frame rate conversions, frame intervals, and speed changes between common rates like 24fps, 29.97fps, 30fps, and 60fps. - URL: https://peasytools.com/video/video-framerate/ - Category: Video Tools - Processing: client ### Timecode Calculator Convert between SMPTE timecodes, frame numbers, seconds, and milliseconds. Supports drop-frame timecode for 29.97fps. - URL: https://peasytools.com/video/video-timecode/ - Category: Video Tools - Processing: client ### Aspect Ratio Calculator Calculate and convert video aspect ratios. Enter dimensions like 1920×1080 or ratios like 16:9 to see simplified ratios and pixel dimensions at various resolutions. - URL: https://peasytools.com/video/video-aspect-ratio/ - Category: Video Tools - Processing: client ### File Size Estimator Estimate video file sizes based on duration, resolution, and codec. Compare sizes across quality presets for storage and bandwidth planning. - URL: https://peasytools.com/video/video-filesize/ - Category: Video Tools - Processing: client ### Speed & Slow-Mo Calculator Calculate video speed changes, slow-motion requirements, and resulting durations. Find the source frame rate needed for smooth slow-motion. - URL: https://peasytools.com/video/video-speed/ - Category: Video Tools - Processing: client ### Storage Planner Calculate how much video fits on a given drive or memory card at different resolutions and quality levels. - URL: https://peasytools.com/video/video-storage/ - Category: Video Tools - Processing: client ### Subtitle Time Converter Convert and offset subtitle timestamps between SRT, VTT, and frame-based formats. Shift timestamps to sync subtitles with video. - URL: https://peasytools.com/video/video-subtitle-time/ - Category: Video Tools - Processing: client ### Bandwidth Calculator Calculate what video quality your internet bandwidth can support. See maximum resolution, frame rate, and codec options for any connection speed. - URL: https://peasytools.com/video/video-bandwidth/ - Category: Video Tools - Processing: client ### Color Space Reference Reference guide for video color spaces including Rec. 709, Rec. 2020, DCI-P3, HDR10, HLG, and Dolby Vision. - URL: https://peasytools.com/video/video-color-space/ - Category: Video Tools - Processing: client ### Codec Reference Compare video codecs — H.264, H.265, VP9, AV1, ProRes, DNxHR — with quality, file size, browser support, and hardware decoding details. - URL: https://peasytools.com/video/video-codec/ - Category: Video Tools - Processing: client ### Platform Specs Guide Video upload specs for YouTube, TikTok, Instagram, Twitter, LinkedIn, Vimeo, and Twitch. Resolution, duration, file size, and recommended settings. - URL: https://peasytools.com/video/video-platform/ - Category: Video Tools - Processing: client ### Chroma Subsampling Guide Understand chroma subsampling (4:4:4, 4:2:2, 4:2:0) with visual diagrams, bandwidth savings, and use cases for broadcast, editing, and web. - URL: https://peasytools.com/video/video-chroma/ - Category: Video Tools - Processing: client ### Screen Recording Guide Recommended screen recording settings for presentations, tutorials, gaming, and demos. Get optimal resolution, framerate, codec, and bitrate. - URL: https://peasytools.com/video/video-screen-record/ - Category: Video Tools - Processing: client ### BPM Calculator Calculate beat durations, bar lengths, and delay times from any BPM. Shows note values from whole notes to 32nd notes with dotted and triplet variants. - URL: https://peasytools.com/audio/audio-bpm/ - Category: Audio Tools - Processing: client ### Frequency Calculator Convert between note names, frequencies (Hz), MIDI numbers, and wavelengths. Supports custom concert pitch from A4=432 to 443 Hz. - URL: https://peasytools.com/audio/audio-freq/ - Category: Audio Tools - Processing: client ### Delay Time Calculator Generate a complete delay time table from any BPM. Shows ms values for every note division — normal, dotted, and triplet. - URL: https://peasytools.com/audio/audio-delay/ - Category: Audio Tools - Processing: client ### dB Converter Convert between decibels and linear amplitude or power values. Shows voltage and power ratios with common reference points. - URL: https://peasytools.com/audio/audio-db/ - Category: Audio Tools - Processing: client ### Audio File Size Calculator Calculate audio file sizes from duration, sample rate, bit depth, and channels. Compare across WAV, FLAC, MP3, AAC, and Opus. - URL: https://peasytools.com/audio/audio-filesize/ - Category: Audio Tools - Processing: client ### Note Frequency Chart Complete chromatic scale reference chart with frequencies, MIDI numbers, and wavelengths from C0 to B8. - URL: https://peasytools.com/audio/audio-note-chart/ - Category: Audio Tools - Processing: client ### Decibel Reference Guide Reference guide of common sound levels in dB SPL with real-world examples and OSHA exposure limits. - URL: https://peasytools.com/audio/audio-db-reference/ - Category: Audio Tools - Processing: client ### Latency Calculator Calculate audio latency from sample rate and buffer size. See one-way and round-trip latency with performance ratings. - URL: https://peasytools.com/audio/audio-latency/ - Category: Audio Tools - Processing: client ### Cents Calculator Calculate pitch deviation in cents between two frequencies. 100 cents = 1 semitone. Useful for tuning and microtonal work. - URL: https://peasytools.com/audio/audio-cents/ - Category: Audio Tools - Processing: client ### Loudness Standards Guide Loudness normalization targets for Spotify, Apple Music, YouTube, broadcast, and podcast. LUFS, true peak, and loudness range. - URL: https://peasytools.com/audio/audio-loudness/ - Category: Audio Tools - Processing: client ### EQ Frequency Reference Frequency band guide for mixing and mastering Interactive EQ frequency reference with band descriptions, instrument ranges, and genre-specific presets. Identify problem frequencies and learn where to cut or boost. - URL: https://peasytools.com/audio/audio-eq-reference/ - Category: Audio Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. f 13. r 14. e 15. q 16. u 17. e 18. n 19. c 20. y 21. 22. o 23. r 24. 25. s 26. e 27. l 28. e 29. c 30. t 31. 32. a 33. n 34. 35. i 36. n 37. s 38. t 39. r 40. u 41. m 42. e 43. n 44. t 45. 46. 2 47. . 48. 49. C 50. h 51. o 52. o 53. s 54. e 55. 56. a 57. 58. g 59. e 60. n 61. r 62. e 63. 64. p 65. r 66. e 67. s 68. e 69. t 70. 71. o 72. r 73. 74. c 75. u 76. s 77. t 78. o 79. m 80. 81. a 82. n 83. a 84. l 85. y 86. s 87. i 88. s 89. 90. 3 91. . 92. 93. R 94. e 95. v 96. i 97. e 98. w 99. 100. b 101. a 102. n 103. d 104. 105. d 106. e 107. s 108. c 109. r 110. i 111. p 112. t 113. i 114. o 115. n 116. s 117. 118. a 119. n 120. d 121. 122. r 123. e 124. c 125. o 126. m 127. m 128. e 129. n 130. d 131. a 132. t 133. i 134. o 135. n 136. s 137. 138. 4 139. . 140. 141. C 142. o 143. p 144. y 145. 146. E 147. Q 148. 149. s 150. e 151. t 152. t 153. i 154. n 155. g 156. s 157. 158. f 159. o 160. r 161. 162. y 163. o 164. u 165. r 166. 167. D 168. A 169. W ### Sample Rate Converter Compare sample rates and estimate file sizes Convert between audio sample rates and calculate file sizes, Nyquist frequencies, and quality differences. Compare CD, DVD, hi-res, and professional rates. - URL: https://peasytools.com/audio/audio-sample-rate-converter/ - Category: Audio Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. s 13. a 14. m 15. p 16. l 17. e 18. 19. r 20. a 21. t 22. e 23. 24. o 25. r 26. 27. s 28. e 29. l 30. e 31. c 32. t 33. 34. a 35. 36. s 37. t 38. a 39. n 40. d 41. a 42. r 43. d 44. 45. 2 46. . 47. 48. O 49. p 50. t 51. i 52. o 53. n 54. a 55. l 56. l 57. y 58. 59. s 60. e 61. t 62. 63. b 64. i 65. t 66. 67. d 68. e 69. p 70. t 71. h 72. 73. a 74. n 75. d 76. 77. c 78. h 79. a 80. n 81. n 82. e 83. l 84. s 85. 86. 3 87. . 88. 89. R 90. e 91. v 92. i 93. e 94. w 95. 96. N 97. y 98. q 99. u 100. i 101. s 102. t 103. 104. f 105. r 106. e 107. q 108. u 109. e 110. n 111. c 112. y 113. 114. a 115. n 116. d 117. 118. q 119. u 120. a 121. l 122. i 123. t 124. y 125. 126. t 127. i 128. e 129. r 130. 131. 4 132. . 133. 134. C 135. o 136. m 137. p 138. a 139. r 140. e 141. 142. f 143. i 144. l 145. e 146. 147. s 148. i 149. z 150. e 151. s 152. 153. a 154. c 155. r 156. o 157. s 158. s 159. 160. f 161. o 162. r 163. m 164. a 165. t 166. s ### Bit Depth Analyzer Dynamic range and noise floor by bit depth Analyze audio bit depth to understand dynamic range, signal-to-noise ratio, and quantization noise. Compare 8-bit through 64-bit float with dither recommendations. - URL: https://peasytools.com/audio/audio-bit-depth-analyzer/ - Category: Audio Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. b 13. i 14. t 15. 16. d 17. e 18. p 19. t 20. h 21. 22. o 23. r 24. 25. s 26. e 27. l 28. e 29. c 30. t 31. 32. a 33. 34. s 35. t 36. a 37. n 38. d 39. a 40. r 41. d 42. 43. 2 44. . 45. 46. R 47. e 48. v 49. i 50. e 51. w 52. 53. d 54. y 55. n 56. a 57. m 58. i 59. c 60. 61. r 62. a 63. n 64. g 65. e 66. , 67. 68. S 69. N 70. R 71. , 72. 73. a 74. n 75. d 76. 77. n 78. o 79. i 80. s 81. e 82. 83. f 84. l 85. o 86. o 87. r 88. 89. 3 90. . 91. 92. C 93. o 94. m 95. p 96. a 97. r 98. e 99. 100. m 101. u 102. l 103. t 104. i 105. p 106. l 107. e 108. 109. b 110. i 111. t 112. 113. d 114. e 115. p 116. t 117. h 118. s 119. 120. s 121. i 122. d 123. e 124. 125. b 126. y 127. 128. s 129. i 130. d 131. e 132. 133. 4 134. . 135. 136. G 137. e 138. t 139. 140. d 141. i 142. t 143. h 144. e 145. r 146. i 147. n 148. g 149. 150. r 151. e 152. c 153. o 154. m 155. m 156. e 157. n 158. d 159. a 160. t 161. i 162. o 163. n 164. s 165. 166. f 167. o 168. r 169. 170. c 171. o 172. n 173. v 174. e 175. r 176. s 177. i 178. o 179. n ### Chord Reference Look up chord voicings, intervals, and notes for any chord. 18 chord types including major, minor, 7th, diminished, augmented, and suspended. Piano keyboard visualization. - URL: https://peasytools.com/audio/chord-reference/ - Category: Audio Tools - Processing: client ### Key & Scale Reference Look up musical keys, scale degrees, modes, and relative major/minor relationships. 14 scales from major and minor to modes, pentatonics, and blues. - URL: https://peasytools.com/audio/key-scale-reference/ - Category: Audio Tools - Processing: client ### Format Identifier Identify any file format by extension or MIME type. Get comprehensive format details including category, compression type, and software compatibility. - URL: https://peasytools.com/doc/format-identifier/ - Category: Format Tools - Processing: client ### MIME Type Lookup Look up MIME types by extension or find extensions by MIME type. See IANA registration status, browser support, and content-type headers. - URL: https://peasytools.com/doc/mime-type-lookup/ - Category: Format Tools - Processing: client ### Base64 Encoder / Decoder Encode text to Base64 or decode Base64 back to text. See size comparison, data URI format, and URL-safe variants. - URL: https://peasytools.com/doc/base64-encoder/ - Category: Format Tools - Processing: client ### URL Encoder / Decoder Percent-encode text for safe URL use or decode encoded URLs. See which characters require encoding per RFC 3986. - URL: https://peasytools.com/doc/url-encoder/ - Category: Format Tools - Processing: client ### HTML Entity Encoder / Decoder Convert special characters to HTML entities or decode entities back to characters. Named, numeric, and hex entity formats. - URL: https://peasytools.com/doc/html-entities/ - Category: Format Tools - Processing: client ### Markdown to HTML Converter Convert Markdown text to clean HTML. Supports headings, bold, italic, links, code blocks, lists, tables, and more. - URL: https://peasytools.com/doc/markdown-to-html/ - Category: Format Tools - Processing: client ### YAML ↔ JSON Converter Convert between YAML and JSON formats. Auto-detects input format and converts to the other with proper formatting. - URL: https://peasytools.com/doc/yaml-json-converter/ - Category: Format Tools - Processing: client ### Line Ending Converter Detect and convert line endings between Windows (CRLF), Unix/Mac (LF), and classic Mac (CR) formats. - URL: https://peasytools.com/doc/line-ending-converter/ - Category: Format Tools - Processing: client ### Data URI Generator Generate data: URIs from text content for embedding directly in HTML and CSS. Supports multiple MIME types and encoding methods. - URL: https://peasytools.com/doc/data-uri-generator/ - Category: Format Tools - Processing: client ### Hex Dump Viewer View the hexadecimal representation of text in classic hex dump format with offset, hex bytes, and ASCII columns. - URL: https://peasytools.com/doc/hex-dump-viewer/ - Category: Format Tools - Processing: client ### Unicode Escape Converter Convert text to Unicode escape sequences for JavaScript, Python, Java, CSS, and HTML. Or unescape sequences back to text. - URL: https://peasytools.com/doc/unicode-escape-converter/ - Category: Format Tools - Processing: client ### File Size Converter Convert file sizes between bytes, KB, MB, GB, TB in both decimal (SI) and binary (IEC) units. See real-world storage equivalents. - URL: https://peasytools.com/doc/file-size-converter/ - Category: Format Tools - Processing: client ### Character Set Analyzer Analyze text encoding compatibility. See which character sets can represent your text and byte counts in different encodings. - URL: https://peasytools.com/doc/charset-analyzer/ - Category: Format Tools - Processing: client ### Format Comparison Guide Compare file formats side by side. See compression, quality, browser support, and best use cases for document, image, video, audio, and archive formats. - URL: https://peasytools.com/doc/format-comparison/ - Category: Format Tools - Processing: client ### Conversion Guide File format conversion reference showing quality impact, size changes, and what's preserved or lost when converting between formats. - URL: https://peasytools.com/doc/conversion-guide/ - Category: Format Tools - Processing: client ### QR Data Analyzer Analyze QR code content strings — detect data type, validate structure, measure capacity usage, and show encoding details. - URL: https://peasytools.com/qr/qr-data-analyzer/ - Category: QR & Barcode - Processing: client ### QR Capacity Reference Explore QR code version capacities — see how many characters each version holds at every error correction level and encoding mode. - URL: https://peasytools.com/qr/qr-capacity-reference/ - Category: QR & Barcode - Processing: client ### Wi-Fi QR Config Builder Build a Wi-Fi configuration string for QR codes — generate the WIFI: URI format used by phone cameras to auto-connect. - URL: https://peasytools.com/qr/qr-wifi-generator/ - Category: QR & Barcode - Processing: client ### vCard QR Builder Build a vCard contact string for QR codes — generate the VCF format used by phone cameras to add contacts automatically. - URL: https://peasytools.com/qr/qr-vcard-generator/ - Category: QR & Barcode - Processing: client ### Error Correction Calculator Compare QR error correction levels — see data capacity impact, recovery rates, and recommended use cases for each level. - URL: https://peasytools.com/qr/qr-error-correction/ - Category: QR & Barcode - Processing: client ### Barcode Format Reference Browse barcode symbology specifications — compare 1D, 2D, postal, and retail barcode formats with encoding rules and use cases. - URL: https://peasytools.com/qr/barcode-reference/ - Category: QR & Barcode - Processing: client ### Barcode Validator Validate barcode data strings — check digit verification, format detection, and structure analysis for UPC, EAN, ISBN, and more. - URL: https://peasytools.com/qr/barcode-validator/ - Category: QR & Barcode - Processing: client ### QR Data Formatter Format text for optimal QR encoding — analyze encoding modes, estimate minimum QR version, and compare capacity across formats. - URL: https://peasytools.com/qr/qr-data-formatter/ - Category: QR & Barcode - Processing: client ### Event QR Generator Generate calendar event data for QR codes in iCalendar format Create QR-ready calendar event data in VCALENDAR/VEVENT format. Includes date, time, location, description, and optional reminders. - URL: https://peasytools.com/qr/qr-event-generator/ - Category: QR & Barcode - Processing: client - Steps: 1. Enter the event title 2. Set start/end dates and times 3. Add location and description (optional) 4. Copy the iCalendar data to encode in your QR code ### Email QR Generator Generate email QR data with mailto: URI and MATMSG format Create QR-ready email data in mailto: URI format (RFC 6068). Pre-fill recipient, subject, body, CC, and BCC fields. - URL: https://peasytools.com/qr/qr-email-generator/ - Category: QR & Barcode - Processing: client - Steps: 1. Enter the recipient email address 2. Choose a preset or fill in custom subject and body 3. Add CC/BCC recipients if needed 4. Copy the mailto: URI to encode in your QR code ### SMS QR Generator Generate SMS QR data with pre-filled messages Create QR code data for SMS messages using smsto: and sms: URI formats. Pre-fill phone number and message body. Shows SMS segment count and character limits. - URL: https://peasytools.com/qr/qr-sms-generator/ - Category: QR & Barcode - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. p 13. h 14. o 15. n 16. e 17. 18. n 19. u 20. m 21. b 22. e 23. r 24. 25. o 26. n 27. 28. t 29. h 30. e 31. 32. f 33. i 34. r 35. s 36. t 37. 38. l 39. i 40. n 41. e 42. 43. 2 44. . 45. 46. A 47. d 48. d 49. 50. m 51. e 52. s 53. s 54. a 55. g 56. e 57. 58. t 59. e 60. x 61. t 62. 63. o 64. n 65. 66. s 67. u 68. b 69. s 70. e 71. q 72. u 73. e 74. n 75. t 76. 77. l 78. i 79. n 80. e 81. s 82. 83. ( 84. o 85. p 86. t 87. i 88. o 89. n 90. a 91. l 92. ) 93. 94. 3 95. . 96. 97. V 98. i 99. e 100. w 101. 102. s 103. m 104. s 105. t 106. o 107. : 108. 109. a 110. n 111. d 112. 113. s 114. m 115. s 116. : 117. 118. U 119. R 120. I 121. 122. f 123. o 124. r 125. m 126. a 127. t 128. s 129. 130. 4 131. . 132. 133. C 134. o 135. p 136. y 137. 138. t 139. h 140. e 141. 142. Q 143. R 144. 145. d 146. a 147. t 148. a 149. 150. s 151. t 152. r 153. i 154. n 155. g ### Geo Location QR Generator Generate geographic coordinates for QR codes Create QR code data for geographic locations using geo: URI (RFC 5870). Shows Google Maps, Apple Maps, and OpenStreetMap URLs. Converts between decimal degrees and DMS. - URL: https://peasytools.com/qr/qr-geo-location/ - Category: QR & Barcode - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. l 11. a 12. t 13. i 14. t 15. u 16. d 17. e 18. 19. a 20. n 21. d 22. 23. l 24. o 25. n 26. g 27. i 28. t 29. u 30. d 31. e 32. 33. ( 34. e 35. . 36. g 37. . 38. , 39. 40. 3 41. 7 42. . 43. 7 44. 7 45. 4 46. 9 47. , 48. 49. - 50. 1 51. 2 52. 2 53. . 54. 4 55. 1 56. 9 57. 4 58. ) 59. 60. 2 61. . 62. 63. O 64. r 65. 66. s 67. e 68. l 69. e 70. c 71. t 72. 73. a 74. 75. l 76. a 77. n 78. d 79. m 80. a 81. r 82. k 83. 84. p 85. r 86. e 87. s 88. e 89. t 90. 91. 3 92. . 93. 94. V 95. i 96. e 97. w 98. 99. g 100. e 101. o 102. : 103. 104. U 105. R 106. I 107. , 108. 109. G 110. o 111. o 112. g 113. l 114. e 115. 116. M 117. a 118. p 119. s 120. , 121. 122. A 123. p 124. p 125. l 126. e 127. 128. M 129. a 130. p 131. s 132. , 133. 134. a 135. n 136. d 137. 138. O 139. S 140. M 141. 142. U 143. R 144. L 145. s 146. 147. 4 148. . 149. 150. C 151. o 152. p 153. y 154. 155. t 156. h 157. e 158. 159. Q 160. R 161. 162. d 163. a 164. t 165. a 166. 167. s 168. t 169. r 170. i 171. n 172. g ### Phone Call QR Generator Generate tel: URI QR data for phone calls Create QR code data for phone calls using tel: URI (RFC 3966). Auto-formats numbers to E.164 international standard. Detects country codes for 20+ countries. - URL: https://peasytools.com/qr/qr-phone-call/ - Category: QR & Barcode - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. p 13. h 14. o 15. n 16. e 17. 18. n 19. u 20. m 21. b 22. e 23. r 24. 25. i 26. n 27. 28. a 29. n 30. y 31. 32. f 33. o 34. r 35. m 36. a 37. t 38. 39. 2 40. . 41. 42. V 43. i 44. e 45. w 46. 47. t 48. e 49. l 50. : 51. 52. U 53. R 54. I 55. 56. a 57. n 58. d 59. 60. M 61. E 62. C 63. A 64. R 65. D 66. 67. f 68. o 69. r 70. m 71. a 72. t 73. s 74. 75. 3 76. . 77. 78. C 79. h 80. e 81. c 82. k 83. 84. E 85. . 86. 1 87. 6 88. 4 89. , 90. 91. n 92. a 93. t 94. i 95. o 96. n 97. a 98. l 99. , 100. 101. a 102. n 103. d 104. 105. i 106. n 107. t 108. e 109. r 110. n 111. a 112. t 113. i 114. o 115. n 116. a 117. l 118. 119. f 120. o 121. r 122. m 123. a 124. t 125. t 126. i 127. n 128. g 129. 130. 4 131. . 132. 133. C 134. o 135. p 136. y 137. 138. t 139. h 140. e 141. 142. Q 143. R 144. 145. d 146. a 147. t 148. a 149. 150. s 151. t 152. r 153. i 154. n 155. g ### MeCard Generator Generate MeCard and vCard 3.0 contact strings for QR codes. Enter a name and optional phone, email, org, URL, and note. Compact format ideal for smaller QR codes. - URL: https://peasytools.com/qr/mecard-generator/ - Category: QR & Barcode - Processing: client ### App Store Link Generator Format app store URLs for QR codes with universal links and deep link support. Auto-detects platform from URL. Supports Apple, Google Play, Galaxy, Amazon, and more. - URL: https://peasytools.com/qr/app-store-link-generator/ - Category: QR & Barcode - Processing: client ### Word Counter Count words, characters, sentences, and paragraphs. Instantly count words, characters, sentences, paragraphs, and lines in any text. Also estimates reading time based on average reading speed. - URL: https://peasytools.com/text/text-counter/ - Category: Text Tools - Processing: client - Steps: 1. Paste or type your text in the input area 2. Statistics update automatically as you type 3. View word count, character count, sentences, paragraphs, lines, and reading time ### Case Converter Convert text between UPPER, lower, Title, camelCase, and more. Convert text between 8 different case formats: UPPER CASE, lower case, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case. - URL: https://peasytools.com/text/text-case-converter/ - Category: Text Tools - Processing: client - Steps: 1. Paste or type your text 2. Select the target case from the dropdown 3. Click Convert to transform the text 4. Copy the result ### Sort Lines Sort lines alphabetically, numerically, or randomly. Sort lines of text in alphabetical, reverse, numeric, random, or length order. Optionally remove blank lines and control case sensitivity. - URL: https://peasytools.com/text/sort-lines/ - Category: Text Tools - Processing: client - Steps: 1. Paste your list of lines 2. Choose the sort order (A→Z, Z→A, numeric, random, or by length) 3. Optionally enable case sensitivity or remove blank lines 4. Click Sort to reorder ### Lorem Ipsum Generator Generate placeholder text for designs and layouts. Generate Lorem Ipsum placeholder text in paragraphs, sentences, or words. Customize the amount and choose whether to start with the classic 'Lorem ipsum dolor sit amet' opening. - URL: https://peasytools.com/text/lorem-ipsum-generator/ - Category: Text Tools - Processing: client - Steps: 1. Set the number of paragraphs, sentences, or words to generate 2. Choose the unit type 3. Optionally start with 'Lorem ipsum dolor sit amet...' 4. Click Generate ### Slug Generator Convert text to URL-friendly slugs. Convert any text into a clean, URL-friendly slug. Removes special characters, replaces spaces with hyphens or underscores, and optionally truncates to a maximum length. - URL: https://peasytools.com/text/slug-generator/ - Category: Text Tools - Processing: client - Steps: 1. Type or paste the text to slugify 2. Choose separator (hyphen, underscore, or dot) 3. Set a maximum length if needed (0 = no limit) 4. Click Slugify ### Find & Replace Find and replace text with regex support. Find and replace text with support for regular expressions, case sensitivity, and replace-all mode. Preview changes before copying the result. - URL: https://peasytools.com/text/find-and-replace/ - Category: Text Tools - Processing: client - Steps: 1. Paste your text 2. Enter the text to find and the replacement text 3. Enable regex, case sensitivity, or replace-all as needed 4. Click Replace to see the result ### Remove Duplicate Lines Remove duplicate lines from text. Remove duplicate lines from a list while preserving the original order. Configure case sensitivity, whitespace trimming, and blank line removal. - URL: https://peasytools.com/text/remove-duplicate-lines/ - Category: Text Tools - Processing: client - Steps: 1. Paste your list with duplicate lines 2. Choose comparison options (case sensitivity, trimming) 3. Click Remove Duplicates 4. Copy the deduplicated result ### Base64 Encoder/Decoder Encode text to Base64 or decode Base64 back to text. Encode plain text to Base64 or decode Base64 strings back to readable text. Supports Unicode characters through UTF-8 encoding. - URL: https://peasytools.com/text/base64-encode-decode/ - Category: Text Tools - Processing: client - Steps: 1. Choose Encode or Decode 2. Paste your text (or Base64 string for decoding) 3. Click Encode / Decode 4. Copy the result ### URL Encoder/Decoder Encode or decode URL-encoded strings. Encode special characters for safe use in URLs, or decode percent-encoded strings back to readable text. Supports both component encoding and full URI encoding. - URL: https://peasytools.com/text/url-encode-decode/ - Category: Text Tools - Processing: client - Steps: 1. Choose Encode or Decode 2. Select encoding mode (Component or Full URI) 3. Paste your text or URL 4. Click Process ### JSON Formatter Format or minify JSON data. Pretty-print JSON for readability or minify it for compact storage. Validates JSON syntax and reports errors with line numbers. - URL: https://peasytools.com/text/json-formatter/ - Category: Text Tools - Processing: client - Steps: 1. Paste your JSON data 2. Choose Format (pretty-print) or Minify (compact) 3. Adjust indent level for formatting (default: 2 spaces) 4. Click Format / Minify ### HTML Entity Encoder/Decoder Encode special characters as HTML entities or decode them. Encode special characters like <, >, &, and quotes into their HTML entity equivalents, or decode HTML entities back to characters. - URL: https://peasytools.com/text/html-entity-encoder/ - Category: Text Tools - Processing: client - Steps: 1. Choose Encode or Decode 2. Paste your text or HTML 3. Click Convert 4. Copy the result ### Reverse Text Reverse characters, words, or lines in your text. Reverse text at the character, word, or line level. Character reversal handles Unicode correctly, including emoji and CJK characters. - URL: https://peasytools.com/text/reverse-text/ - Category: Text Tools - Processing: client - Steps: 1. Paste your text 2. Choose reversal mode: characters, words, or lines 3. Click Reverse ### Add/Remove Line Numbers Add or remove line numbers from text. Add line numbers to text with customizable separator and start number, or remove existing line numbers from numbered text. - URL: https://peasytools.com/text/line-numbers/ - Category: Text Tools - Processing: client - Steps: 1. Paste your text 2. Choose Add or Remove 3. For adding: set separator, start number, and padding preference 4. Click Process ### Text Diff Compare two texts and highlight differences. Compare two blocks of text side by side and see the differences highlighted. Compare by line or by word, with options to ignore case and whitespace. - URL: https://peasytools.com/text/text-diff/ - Category: Text Tools - Processing: client - Steps: 1. Paste the original text in the first input 2. Paste the modified text in the second input 3. Choose line or word comparison mode 4. Optionally ignore case or whitespace 5. Click Compare ### Text Extractor Extract emails, URLs, numbers, or IPs from text. Extract specific data from text using built-in patterns: email addresses, URLs, numbers, IP addresses, and hashtags. Filter for unique values and optionally sort the results. - URL: https://peasytools.com/text/text-extractor/ - Category: Text Tools - Processing: client - Steps: 1. Paste text containing the data you want to extract 2. Select what to extract (emails, URLs, numbers, IPs, or hashtags) 3. Enable Unique to remove duplicates 4. Enable Sort to alphabetize results 5. Click Extract ### Hash Generator Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes from text Generate cryptographic hash digests from text using the Web Crypto API. Supports SHA-1, SHA-256, SHA-384, and SHA-512 algorithms with hex or Base64 output. All hashing is done in your browser — your data never leaves your device. - URL: https://peasytools.com/dev/hash-generator/ - Category: Developer Tools - Processing: client - Steps: 1. Paste or type text in the input area 2. Select the hash algorithm (SHA-256 is the default) 3. Choose output format: Hex (lowercase) or Base64 4. Toggle 'Hash per line' to hash each line separately 5. Click Generate to compute the hash ### Password Generator Generate strong, random passwords Generate cryptographically secure passwords with customizable length, character sets, and ambiguous character exclusion. Create multiple passwords at once for batch provisioning. - URL: https://peasytools.com/dev/password-generator/ - Category: Developer Tools - Processing: client - Steps: 1. Set the desired password length (8–128 characters) 2. Choose character types: uppercase, lowercase, numbers, symbols 3. Optionally exclude ambiguous characters (0, O, l, 1, I) 4. Set how many passwords to generate 5. Click Generate ### Unix Timestamp Converter Convert between Unix timestamps and human-readable dates Convert Unix epoch timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. Auto-detects input format. - URL: https://peasytools.com/dev/timestamp-converter/ - Category: Developer Tools - Processing: client - Steps: 1. Enter a Unix timestamp or a date string 2. The tool auto-detects the format, or choose a direction manually 3. View the converted result with timezone information ### Cron Expression Generator Build and understand cron schedule expressions Build cron expressions with a visual interface. See the human-readable description and next scheduled run times. Supports standard 5-field cron syntax. - URL: https://peasytools.com/dev/cron-expression-generator/ - Category: Developer Tools - Processing: client - Steps: 1. Set each field: minute, hour, day of month, month, day of week 2. Use * for 'every', */N for intervals, comma-separated values for specific times 3. Click Generate to see the expression and next run times ### Chmod Calculator Convert between numeric and symbolic Unix file permissions Convert Unix file permissions between numeric (e.g., 755) and symbolic (e.g., rwxr-xr-x) notation. Auto-detects input format. - URL: https://peasytools.com/dev/chmod-calculator/ - Category: Developer Tools - Processing: client - Steps: 1. Enter a numeric permission (e.g., 755) or symbolic (e.g., rwxr-xr-x) 2. The tool auto-detects the format and converts to the other 3. View the permission breakdown for owner, group, and others ### String Escape / Unescape Escape and unescape strings for JSON, HTML, URL, XML, CSV, SQL Escape or unescape strings for use in JSON, HTML, URLs, XML, CSV, or SQL. Handles special characters, Unicode sequences, and encoding formats. - URL: https://peasytools.com/dev/string-escape-unescape/ - Category: Developer Tools - Processing: client - Steps: 1. Paste or type text in the input area 2. Select the format: JSON, HTML, URL, XML, CSV, or SQL 3. Choose direction: Escape or Unescape 4. Click Convert to transform the text ### IP Subnet Calculator Calculate subnet ranges, broadcast addresses, and CIDR notation Calculate IPv4 subnet details from an IP address and subnet mask or CIDR notation. View network address, broadcast address, usable host range, and total hosts. - URL: https://peasytools.com/dev/ip-subnet-calculator/ - Category: Developer Tools - Processing: client - Steps: 1. Enter an IP address with CIDR notation (e.g., 192.168.1.0/24) 2. Or enter an IP with subnet mask (e.g., 192.168.1.0 255.255.255.0) 3. Click Calculate to view subnet details ### Color Code Converter Convert colors between HEX, RGB, and HSL formats Convert colors between HEX, RGB, and HSL formats instantly. Auto-detects input format and shows all representations with a live color preview. - URL: https://peasytools.com/dev/color-converter/ - Category: Developer Tools - Processing: client - Steps: 1. Enter a color in any format: #FF6B35, rgb(255,107,53), or hsl(20,100%,60%) 2. Click Convert to see all representations 3. View the color preview swatch ### CSV ↔ JSON Converter Convert between CSV and JSON formats Convert CSV data to JSON arrays or JSON back to CSV. Supports custom delimiters, header rows, and nested values. - URL: https://peasytools.com/dev/csv-json-converter/ - Category: Developer Tools - Processing: client - Steps: 1. Paste CSV or JSON data in the input area 2. Select direction: CSV → JSON or JSON → CSV 3. Set delimiter (comma, tab, semicolon, pipe) for CSV 4. Toggle whether the first row contains headers 5. Click Convert ### XML ↔ JSON Converter Convert between XML and JSON formats Convert XML documents to JSON or JSON back to XML. Uses the browser's built-in DOMParser for accurate XML parsing. - URL: https://peasytools.com/dev/xml-json-converter/ - Category: Developer Tools - Processing: client - Steps: 1. Paste XML or JSON data in the input area 2. Select direction: XML → JSON or JSON → XML 3. Set indentation for formatted output 4. Click Convert ### SQL Formatter Format and minify SQL queries Format messy SQL queries into readable, indented code or minify formatted SQL into a single line. Supports keyword uppercasing. - URL: https://peasytools.com/dev/sql-formatter/ - Category: Developer Tools - Processing: client - Steps: 1. Paste a SQL query in the input area 2. Choose action: Format or Minify 3. Set indentation (2 or 4 spaces) 4. Toggle keyword uppercasing 5. Click Format ### Markdown Table Generator Convert CSV/TSV data into formatted Markdown tables Transform tabular data into clean Markdown table syntax. Paste CSV, TSV, or pipe-separated data and get properly formatted Markdown tables with column alignment options. - URL: https://peasytools.com/dev/markdown-table/ - Category: Developer Tools - Processing: client - Steps: 1. Paste or type your tabular data (CSV, TSV, or pipe-separated) 2. Choose column alignment (left, center, right, or default) 3. Toggle header row detection on or off 4. Copy the generated Markdown table ### HTTP Status Code Reference Look up HTTP status codes with descriptions and usage Quick reference for all HTTP status codes. Search by code number or keyword to find the meaning, description, and common usage of any HTTP response status code. - URL: https://peasytools.com/dev/http-status/ - Category: Developer Tools - Processing: client - Steps: 1. Type a status code number (e.g., 404) or keyword (e.g., 'not found') 2. Browse matching results with descriptions 3. Copy any status code information you need ### Meta Tags Generator Generate HTML meta tags, Open Graph, and Twitter Card tags Create complete meta tag sets for web pages including standard HTML meta tags, Open Graph (Facebook/LinkedIn), and Twitter Card tags. Enter your page details and get ready-to-use HTML. - URL: https://peasytools.com/dev/meta-tags/ - Category: Developer Tools - Processing: client - Steps: 1. Enter your page title and description 2. Select the Open Graph type (website, article, product, etc.) 3. Optionally add URL and image URL 4. Copy the generated meta tags into your HTML <head> ### Robots.txt Generator Create robots.txt files with AI crawler blocking options Generate robots.txt files for your website with easy-to-use options. Include rules for search engine crawlers, AI bots, and custom paths. Supports sitemap URL declaration and crawl delay. - URL: https://peasytools.com/dev/robots-txt/ - Category: Developer Tools - Processing: client - Steps: 1. Choose to allow all or selectively disallow paths 2. Add paths to block (e.g., /admin/, /api/) 3. Optionally add your sitemap URL 4. Set crawl delay if needed 5. Copy the generated robots.txt content ### .gitignore Generator Generate .gitignore files for popular frameworks Create .gitignore files for popular programming languages and frameworks. Choose from Node.js, Python, Java, Go, Rust, Ruby, Swift, .NET, Flutter, and Unity templates. - URL: https://peasytools.com/dev/gitignore/ - Category: Developer Tools - Processing: client - Steps: 1. Select your framework/language from the dropdown 2. Review the generated .gitignore patterns 3. Copy and save as .gitignore in your project root ### HTML Formatter Beautify or minify HTML code with proper indentation Format HTML code with proper indentation and line breaks, or minify it by removing whitespace. Supports customizable indent size for beautified output. - URL: https://peasytools.com/dev/html-formatter/ - Category: Developer Tools - Processing: client - Steps: 1. Paste your HTML code in the input area 2. Choose Format (beautify) or Minify 3. Select indent size (2 or 4 spaces) 4. Copy the formatted result ### CSS Unit Converter Convert between px, rem, em, pt, %, vw, and vh Convert CSS units between px, rem, em, pt, percentage, vw, and vh. Set your base font size and viewport dimensions for accurate conversions across all CSS length units. - URL: https://peasytools.com/dev/css-units/ - Category: Developer Tools - Processing: client - Steps: 1. Enter a CSS value with unit (e.g., '16px', '1rem', '12pt') 2. Set base font size for rem/em calculations (default: 16px) 3. Set viewport width/height for vw/vh calculations 4. See all equivalent values across 7 CSS units ### JSONPath Evaluator Query JSON data using JSONPath expressions Evaluate JSONPath expressions against JSON data. Supports dot notation, bracket notation, wildcards, array slicing, and recursive descent. - URL: https://peasytools.com/dev/json-path/ - Category: Developer Tools - Processing: client - Steps: 1. Paste your JSON data in the input area 2. Enter a JSONPath expression (e.g., $.store.book[0].title) 3. View the matching results ### Text Diff Checker Compare two texts and highlight differences Compare two text inputs and see the differences highlighted in unified diff format. Useful for comparing code versions, configuration files, or any text content. - URL: https://peasytools.com/dev/dev-text-diff/ - Category: Developer Tools - Processing: client - Steps: 1. Paste the original text in the first input area 2. Paste the modified text in the second input area 3. Toggle whitespace handling if needed 4. View the unified diff output with +/- indicators ### Data URI Converter Encode text to Data URIs or decode Data URIs to text Convert text content to Base64-encoded Data URIs or decode existing Data URIs back to readable text. Supports multiple MIME types including text, HTML, CSS, JavaScript, JSON, and SVG. - URL: https://peasytools.com/dev/data-uri/ - Category: Developer Tools - Processing: client - Steps: 1. Choose Encode (text→URI) or Decode (URI→text) 2. For encoding: paste content and select MIME type 3. For decoding: paste the full data: URI 4. Copy the result ### Lorem Ipsum Generator Generate placeholder text, code snippets, names, and emails Generate various types of placeholder content for development and design. Create lorem ipsum text, code variable names, fake person names, or test email addresses. - URL: https://peasytools.com/dev/lorem/ - Category: Developer Tools - Processing: client - Steps: 1. Select content type: Lorem Ipsum, Code, Names, or Emails 2. Choose the count and unit (words, sentences, or paragraphs) 3. Copy the generated placeholder content ### Path Converter Convert between Windows backslash and Unix forward-slash paths Convert file paths between Windows (backslash) and Unix/macOS (forward-slash) formats. Automatically detects the input format and converts to the other style. - URL: https://peasytools.com/dev/backslash/ - Category: Developer Tools - Processing: client - Steps: 1. Paste one or more file paths 2. The tool auto-detects Windows or Unix format 3. Get the converted paths in the opposite format ### .htaccess Generator Generate Apache .htaccess rules for redirects, caching, and security Create .htaccess configuration files for Apache web servers. Generate rules for HTTPS redirect, www handling, gzip compression, browser caching, and custom URL redirects. - URL: https://peasytools.com/dev/htaccess/ - Category: Developer Tools - Processing: client - Steps: 1. Toggle the rules you need (HTTPS, www, gzip, cache) 2. Add custom redirect paths if needed 3. Copy the generated .htaccess content 4. Upload to your Apache web server root ### .env Validator Validate, sort, and compare .env environment files Validate .env files for syntax errors, sort variables alphabetically, or compare two .env files to find differences. Essential for managing environment configuration across deployments. - URL: https://peasytools.com/dev/env/ - Category: Developer Tools - Processing: client - Steps: 1. Paste your .env file content 2. Choose action: Validate, Sort, or Compare 3. For Compare mode, paste the second .env in the input below 4. Review the results and copy cleaned output ### Placeholder Image Generator Generate placeholder image URLs for development and design Generate placeholder image URLs from popular services like placehold.co, picsum.photos, and dummyimage.com. Customize dimensions, text, and colors for development mockups. - URL: https://peasytools.com/dev/placeholder/ - Category: Developer Tools - Processing: client - Steps: 1. Set width and height in pixels 2. Choose a placeholder service 3. Optionally customize text and colors 4. Copy the generated URL or HTML img tag ### SERP Preview Preview how your page appears in Google search results See exactly how your page will look in Google search results. Enter a title, description, and URL to preview the snippet with accurate character truncation and pixel-width rendering. - URL: https://peasytools.com/seo/serp-preview/ - Category: SEO Tools - Processing: client - Steps: 1. Enter your page title (recommended: 50-60 characters) 2. Enter your meta description (recommended: 150-155 characters) 3. Enter your page URL 4. See the live preview update in real time ### OG Tag Debugger Parse and validate Open Graph meta tags from HTML Paste your HTML and instantly see all Open Graph and Twitter Card meta tags extracted and validated. Check for missing required tags and preview how your page will appear when shared on social media. - URL: https://peasytools.com/seo/og-tag-debugger/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your HTML source code into the input area 2. Click Analyze to extract all OG and Twitter Card tags 3. Review the tag list for missing or invalid tags ### Heading Analyzer Extract and analyze HTML heading structure for SEO Paste your HTML and see the complete heading hierarchy (H1-H6). Identify missing headings, skipped levels, duplicate H1 tags, and other structural issues that affect SEO and accessibility. - URL: https://peasytools.com/seo/heading-analyzer/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your HTML content into the input area 2. Click Analyze to extract all headings 3. Review the heading tree and any warnings ### Keyword Density Analyzer Analyze keyword frequency and distribution in your content Analyze your content to find the most frequent keywords and phrases. See density percentages for 1-word, 2-word, and 3-word phrases. Identify keyword stuffing risks and optimize your content. - URL: https://peasytools.com/seo/keyword-density/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your content (plain text or HTML) 2. Set the minimum word length to filter short words 3. Review the keyword frequency table for each n-gram type ### Readability Score Calculate readability scores using five proven formulas Analyze your content's readability using Flesch-Kincaid, Gunning Fog, SMOG Index, Automated Readability Index, and Coleman-Liau Index. Get an overall grade level and actionable suggestions for improvement. - URL: https://peasytools.com/seo/readability-score/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your content into the input area 2. Click Analyze to calculate all five readability scores 3. Review the average grade level and individual formula results ### XML Sitemap Generator Generate valid XML sitemaps from a list of URLs Enter your URLs (one per line) to generate a standards-compliant XML sitemap. Customize change frequency, priority, and last modified date. Copy or download the result for your website. - URL: https://peasytools.com/seo/sitemap-generator/ - Category: SEO Tools - Processing: client - Steps: 1. Enter URLs one per line (must start with http:// or https://) 2. Choose a change frequency (daily, weekly, monthly, etc.) 3. Set the priority (0.0 to 1.0) 4. Copy or download the generated XML sitemap ### Schema.org Generator Generate JSON-LD structured data for rich search results Generate valid Schema.org JSON-LD markup for your web pages. Choose from common types like Article, Product, FAQ, Recipe, LocalBusiness, Event, HowTo, and BreadcrumbList. - URL: https://peasytools.com/seo/schema-generator/ - Category: SEO Tools - Processing: client - Steps: 1. Select a Schema.org type (Article, Product, FAQ, etc.) 2. Fill in the required fields (name, description, URL) 3. Click Generate to create the JSON-LD markup 4. Copy and paste into your page's <head> section ### Link Extractor Extract and categorize all links from HTML content Paste HTML and extract all links with their anchor text, href, and attributes. Categorize links as internal, external, nofollow, or broken. Export the link list for analysis. - URL: https://peasytools.com/seo/link-extractor/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your HTML content into the input area 2. Click Extract to find all links 3. Review the categorized link list (internal, external, nofollow) ### Canonical Tag Checker Find and validate canonical URL tags in HTML Paste your HTML to find the canonical URL tag and validate it. Check for common issues like missing canonical tags, relative URLs, and mismatched protocols. - URL: https://peasytools.com/seo/canonical-checker/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your HTML source code 2. Click Check to find canonical tags 3. Review any warnings or issues found ### Robots.txt Analyzer Parse and test robots.txt rules against URLs Paste your robots.txt content and test whether specific URLs are allowed or blocked for different user agents. Identify syntax errors and common configuration mistakes. - URL: https://peasytools.com/seo/robots-txt-analyzer/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your robots.txt content into the input area 2. Enter a URL to test in the options panel 3. Click Analyze to see parsed rules and test results ### Structured Data Validator Validate JSON-LD structured data syntax and Schema.org types Paste JSON-LD markup or HTML containing structured data to validate syntax, check required properties, and verify Schema.org type usage. Find errors before submitting to Google's Rich Results Test. - URL: https://peasytools.com/seo/structured-data-validator/ - Category: SEO Tools - Processing: client - Steps: 1. Paste JSON-LD markup or HTML containing structured data 2. Click Validate to check syntax and Schema.org compliance 3. Review errors, warnings, and extracted schema information ### Word Count & SEO Grade Analyze content length with SEO-optimized word count metrics Count words, sentences, and paragraphs in your content. Get an SEO content grade based on word count, reading time estimate, and see how your content length compares to recommended ranges for different content types. - URL: https://peasytools.com/seo/word-count-seo/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your content (plain text or HTML) 2. View word count, character count, and reading time instantly 3. Check the SEO Content Grade for optimization suggestions 4. Compare your word count against target ranges for your content type ### Meta Length Checker Check meta title & description lengths against Google's display limits Validate your meta title and description against Google's character and pixel-width limits. Get pass/fail status with optimization tips. - URL: https://peasytools.com/seo/seo-meta-length-checker/ - Category: SEO Tools - Processing: client - Steps: 1. Enter your meta title in the main text area 2. Enter your meta description in the secondary text area 3. Review character counts and pixel-width estimates 4. Fix any warnings or failures shown in the results ### URL Slug Generator Generate SEO-friendly URL slugs from page titles Convert page titles to clean, SEO-optimized URL slugs. Removes stop words, special characters, and formats for maximum search engine friendliness. - URL: https://peasytools.com/seo/seo-url-slug-generator/ - Category: SEO Tools - Processing: client - Steps: 1. Enter a page title or existing URL slug 2. Choose a mode: generate, analyze, or bulk 3. Review the optimized slug and any recommendations 4. Copy the result and use it in your CMS ### Keyword Density Analyzer Analyze keyword frequency and density across your content Calculate keyword density for single words and multi-word phrases (n-grams). Detect keyword stuffing risks and optimize your on-page SEO. - URL: https://peasytools.com/seo/seo-keyword-density-analyzer/ - Category: SEO Tools - Processing: client - Steps: 1. Paste your page content into the text area 2. Set the maximum n-gram size (1-4 words) 3. Review the frequency tables for each n-gram level 4. Check for keyword stuffing warnings (>3% density) ### Percentage Calculator Calculate percentages, increases, decreases, and ratios Four percentage calculation modes: find a percentage of a number, find what percentage one number is of another, calculate percentage change between two values, and add or remove a percentage from a number. - URL: https://peasytools.com/math/percentage-calculator/ - Category: Math Tools - Processing: client - Steps: 1. Select a calculation mode (What is X% of Y, etc.) 2. Enter two numbers in the input fields 3. Click Calculate to see the result and formula ### Ratio Calculator Simplify, scale, and find equivalent ratios Work with ratios in three modes: simplify a ratio to its lowest terms, scale a ratio by a factor, or find equivalent ratios. Supports 2-part and 3-part ratios. - URL: https://peasytools.com/math/ratio-calculator/ - Category: Math Tools - Processing: client - Steps: 1. Enter a ratio (e.g., 12:8 or 3:4:5) 2. Select an action: simplify, scale, or find equivalents 3. For scaling, enter the scale factor 4. Click Calculate to see the result ### Average Calculator Calculate mean, median, mode, range, and standard deviation Enter a set of numbers to calculate comprehensive statistics: arithmetic mean, median, mode, range, sum, count, variance, and standard deviation. Handles decimal numbers and large data sets. - URL: https://peasytools.com/math/average-calculator/ - Category: Math Tools - Processing: client - Steps: 1. Enter numbers separated by commas, spaces, or newlines 2. Click Calculate to see all statistics 3. Review mean, median, mode, range, and standard deviation ### GCD & LCM Calculator Find greatest common divisor and least common multiple Calculate the GCD (greatest common divisor) and LCM (least common multiple) of two or more numbers. See step-by-step prime factorization and the relationship between GCD and LCM. - URL: https://peasytools.com/math/gcd-lcm-calculator/ - Category: Math Tools - Processing: client - Steps: 1. Enter two or more numbers separated by commas or spaces 2. Click Calculate to find GCD and LCM 3. Review the prime factorization of each number ### Prime Number Tools Check, factorize, generate, and find prime numbers Four prime number tools in one: check if a number is prime, find the prime factorization of any number, generate primes up to a limit, or find the Nth prime number. - URL: https://peasytools.com/math/prime-number-tools/ - Category: Math Tools - Processing: client - Steps: 1. Select an action: check, factorize, generate, or find Nth 2. Enter a number in the input area 3. Click Calculate to see the result ### Equation Solver Solve linear and quadratic equations step by step Solve linear equations (ax + b = 0) and quadratic equations (ax² + bx + c = 0) with step-by-step solutions. See the discriminant, roots, and vertex for quadratic equations. - URL: https://peasytools.com/math/equation-solver/ - Category: Math Tools - Processing: client - Steps: 1. Select equation type: linear (ax + b = 0) or quadratic (ax² + bx + c = 0) 2. Enter coefficients (e.g., 2 -3 for 2x - 3 = 0) 3. Click Solve to see the step-by-step solution ### Unit Converter Convert between length, weight, temperature, volume, and more Convert between units in 8 categories: length, weight, temperature, volume, area, speed, time, and digital storage. Enter a value with its unit and see all conversions at once. - URL: https://peasytools.com/math/unit-converter/ - Category: Math Tools - Processing: client - Steps: 1. Select a unit category (length, weight, temperature, etc.) 2. Enter a number with the unit name (e.g., '100 km') 3. Click Convert to see all equivalent values ### Fraction Calculator Add, subtract, multiply, divide, and simplify fractions A complete fraction calculator: simplify fractions to lowest terms, perform arithmetic (add, subtract, multiply, divide), convert between fractions and decimals. Supports mixed numbers like 1 3/4. - URL: https://peasytools.com/math/fraction-calculator/ - Category: Math Tools - Processing: client - Steps: 1. Enter a fraction or expression (e.g., '3/4 + 1/2') 2. Select an operation: simplify, add, subtract, multiply, or divide 3. Click Calculate to see the step-by-step solution ### Roman Numeral Converter Convert between Roman numerals and decimal numbers Convert decimal numbers to Roman numerals (1-3999) or Roman numerals back to decimal. Shows the breakdown of each numeral component. - URL: https://peasytools.com/math/roman-numeral-converter/ - Category: Math Tools - Processing: client - Steps: 1. Select conversion direction: to Roman or to Decimal 2. Enter a number (1-3999) or a Roman numeral string 3. Click Convert to see the result and breakdown ### Fibonacci Calculator Generate sequences, find nth terms, and check Fibonacci numbers Explore the Fibonacci sequence: generate the first N terms, find any specific term, check if a number belongs to the sequence, or sum a range. Shows the golden ratio approximation. - URL: https://peasytools.com/math/fibonacci-calculator/ - Category: Math Tools - Processing: client - Steps: 1. Select a mode: sequence, nth term, check, or sum 2. Enter a number (N for sequence/term, or a value to check) 3. Click Calculate to see the results and golden ratio ### Logarithm Calculator Calculate log₁₀, ln, log₂, and custom base logarithms Compute logarithms in any base with common identities, change-of-base formula, and antilog. Supports log₁₀, natural log (ln), log₂, and custom bases. - URL: https://peasytools.com/math/logarithm-calculator/ - Category: Math Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. n 13. u 14. m 15. b 16. e 17. r 18. 19. t 20. o 21. 22. c 23. a 24. l 25. c 26. u 27. l 28. a 29. t 30. e 31. 32. i 33. t 34. s 35. 36. l 37. o 38. g 39. a 40. r 41. i 42. t 43. h 44. m 45. 46. 2 47. . 48. 49. O 50. p 51. t 52. i 53. o 54. n 55. a 56. l 57. l 58. y 59. 60. s 61. p 62. e 63. c 64. i 65. f 66. y 67. 68. ' 69. n 70. u 71. m 72. b 73. e 74. r 75. 76. b 77. a 78. s 79. e 80. ' 81. 82. ( 83. e 84. . 85. g 86. . 87. , 88. 89. ' 90. 1 91. 0 92. 0 93. 94. 2 95. ' 96. 97. f 98. o 99. r 100. 101. l 102. o 103. g 104. ₂ 105. ( 106. 1 107. 0 108. 0 109. ) 110. ) 111. 112. 3 113. . 114. 115. R 116. e 117. v 118. i 119. e 120. w 121. 122. r 123. e 124. s 125. u 126. l 127. t 128. s 129. 130. a 131. c 132. r 133. o 134. s 135. s 136. 137. a 138. l 139. l 140. 141. c 142. o 143. m 144. m 145. o 146. n 147. 148. b 149. a 150. s 151. e 152. s 153. 154. 4 155. . 156. 157. S 158. e 159. e 160. 161. i 162. d 163. e 164. n 165. t 166. i 167. t 168. i 169. e 170. s 171. 172. a 173. n 174. d 175. 176. a 177. n 178. t 179. i 180. l 181. o 182. g 183. 184. v 185. a 186. l 187. u 188. e 189. s ### Statistics Calculator Mean, median, mode, standard deviation, and more Calculate comprehensive statistics from a dataset: mean, median, mode, range, variance, standard deviation, quartiles, IQR, and outlier detection. - URL: https://peasytools.com/math/statistics-calculator/ - Category: Math Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. n 11. u 12. m 13. b 14. e 15. r 16. s 17. 18. s 19. e 20. p 21. a 22. r 23. a 24. t 25. e 26. d 27. 28. b 29. y 30. 31. c 32. o 33. m 34. m 35. a 36. s 37. 38. o 39. r 40. 41. s 42. p 43. a 44. c 45. e 46. s 47. 48. 2 49. . 50. 51. V 52. i 53. e 54. w 55. 56. c 57. e 58. n 59. t 60. r 61. a 62. l 63. 64. t 65. e 66. n 67. d 68. e 69. n 70. c 71. y 72. 73. m 74. e 75. a 76. s 77. u 78. r 79. e 80. s 81. 82. ( 83. m 84. e 85. a 86. n 87. , 88. 89. m 90. e 91. d 92. i 93. a 94. n 95. , 96. 97. m 98. o 99. d 100. e 101. ) 102. 103. 3 104. . 105. 106. R 107. e 108. v 109. i 110. e 111. w 112. 113. d 114. i 115. s 116. p 117. e 118. r 119. s 120. i 121. o 122. n 123. 124. m 125. e 126. t 127. r 128. i 129. c 130. s 131. 132. ( 133. v 134. a 135. r 136. i 137. a 138. n 139. c 140. e 141. , 142. 143. s 144. t 145. d 146. 147. d 148. e 149. v 150. , 151. 152. r 153. a 154. n 155. g 156. e 157. ) 158. 159. 4 160. . 161. 162. C 163. h 164. e 165. c 166. k 167. 168. q 169. u 170. a 171. r 172. t 173. i 174. l 175. e 176. s 177. , 178. 179. I 180. Q 181. R 182. , 183. 184. a 185. n 186. d 187. 188. o 189. u 190. t 191. l 192. i 193. e 194. r 195. 196. b 197. o 198. u 199. n 200. d 201. s ### Number Base Converter Convert between binary, octal, decimal, hex, and any base Convert numbers between any base from 2 to 36. Auto-detects 0b, 0o, 0x prefixes. Shows simultaneous binary, octal, decimal, and hexadecimal representations. - URL: https://peasytools.com/math/number-base-converter/ - Category: Math Tools - Processing: client - Steps: 1. 1 2. . 3. 4. E 5. n 6. t 7. e 8. r 9. 10. a 11. 12. n 13. u 14. m 15. b 16. e 17. r 18. 19. ( 20. u 21. s 22. e 23. 24. 0 25. b 26. , 27. 28. 0 29. o 30. , 31. 32. 0 33. x 34. 35. p 36. r 37. e 38. f 39. i 40. x 41. 42. f 43. o 44. r 45. 46. a 47. u 48. t 49. o 50. - 51. d 52. e 53. t 54. e 55. c 56. t 57. i 58. o 59. n 60. ) 61. 62. 2 63. . 64. 65. S 66. e 67. l 68. e 69. c 70. t 71. 72. s 73. o 74. u 75. r 76. c 77. e 78. 79. a 80. n 81. d 82. 83. t 84. a 85. r 86. g 87. e 88. t 89. 90. b 91. a 92. s 93. e 94. s 95. 96. 3 97. . 98. 99. V 100. i 101. e 102. w 103. 104. t 105. h 106. e 107. 108. n 109. u 110. m 111. b 112. e 113. r 114. 115. i 116. n 117. 118. a 119. l 120. l 121. 122. c 123. o 124. m 125. m 126. o 127. n 128. 129. b 130. a 131. s 132. e 133. s 134. 135. s 136. i 137. m 138. u 139. l 140. t 141. a 142. n 143. e 144. o 145. u 146. s 147. l 148. y 149. 150. 4 151. . 152. 153. C 154. o 155. p 156. y 157. 158. a 159. n 160. y 161. 162. r 163. e 164. p 165. r 166. e 167. s 168. e 169. n 170. t 171. a 172. t 173. i 174. o 175. n ### Matrix Calculator Perform matrix operations including addition, multiplication, transpose, determinant, and inverse. Supports 2×2, 3×3, and 4×4 matrices with step-by-step results. - URL: https://peasytools.com/math/matrix-calculator/ - Category: Math Tools - Processing: client ### Trigonometry Calculator Calculate trigonometric functions, convert between degrees and radians, solve right triangles, and explore the unit circle with visual references. - URL: https://peasytools.com/math/trigonometry-calculator/ - Category: Math Tools - Processing: client ## Guides (50) ### Image Format Guide: JPEG vs PNG vs WebP vs AVIF Choosing the right image format affects file size, quality, and browser compatibility. This comparison covers the strengths of JPEG, PNG, WebP, and AVIF to help you pick the best format for every use case. - URL: https://peasytools.com/guides/image-format-comparison/ - Category: Comparison - Reading time: 1 min - Words: 296 Key takeaways: - The web has moved beyond just JPEG and PNG. - JPEG has been the web's workhorse since 1992. - PNG provides lossless compression, meaning no quality is lost. - Developed by Google, WebP supports both lossy and lossless compression, transparency, and animation. - Based on the AV1 video codec, AVIF offers the best compression ratios available. ## The Format Landscape The web has moved beyond just JPEG and PNG. Modern formats like WebP and AVIF offer significantly better compression, but browser support and tooling maturity vary. Understanding each format's strengths helps you make the right choice. ## JPEG: The Universal Standard JPEG has been the web's workhorse since 1992. It uses lossy compression that discards visual information the human eye is less sensitive to. JPEG excels at photographs and complex images with gradients. **Strengths:** Universal support, excellent for photos, small file sizes. **Weaknesses:** No transparency, visible artifacts at high compression, no animation. ## PNG: Lossless with Transparency PNG provides lossless compression, meaning no quality is lost. It supports full alpha transparency, making it ideal for logos, icons, and images that overlay other content. **Strengths:** Lossless quality, transparency support, sharp edges. **Weaknesses:** Large file sizes for photos, no animation (use APNG). ## WebP: The Modern Default Developed by Google, WebP supports both lossy and lossless compression, transparency, and animation. It typically achieves 25-35% smaller file sizes than equivalent JPEG or PNG files. **Strengths:** Smaller files, supports all features, 97%+ browser support. **Weaknesses:** Slightly lower quality at extreme compression, limited support in older tools. ## AVIF: Next Generation Based on the AV1 video codec, AVIF offers the best compression ratios available. It can produce files 50% smaller than JPEG at equivalent quality. **Strengths:** Best compression, excellent quality, HDR support. **Weaknesses:** Slower encoding, 92% browser support, limited editing tool support. ## Quick Decision Guide | Use Case | Recommended Format | |----------|-------------------| | Photos for web | WebP (AVIF if supported) | | Logos and icons | SVG or PNG | | Screenshots | PNG or WebP lossless | | Social media | JPEG or WebP | | Email attachments | JPEG (universal support) | ### Social Media Image Sizes: The Complete 2025 Guide Each social platform has specific image dimensions for profiles, covers, posts, and stories. Using the wrong size results in cropping, blurring, or poor presentation. This guide covers current sizes for all major platforms. - URL: https://peasytools.com/guides/social-media-image-sizes-2025/ - Category: How-To - Reading time: 1 min - Words: 244 Key takeaways: - Social media platforms display images at specific aspect ratios and resolutions. - Design at 2x resolution for Retina/high-DPI screens. - Uploading the wrong size causes automatic cropping that may cut off important content or create a blurry appearance. - - Keep important content centered (edges may be cropped in different views). ## Why Sizes Matter Social media platforms display images at specific aspect ratios and resolutions. Uploading the wrong size causes automatic cropping that may cut off important content or create a blurry appearance. ## Instagram | Type | Dimensions | Aspect Ratio | |------|-----------|-------------| | Profile photo | 320x320 | 1:1 | | Square post | 1080x1080 | 1:1 | | Portrait post | 1080x1350 | 4:5 | | Landscape post | 1080x566 | 1.91:1 | | Story/Reel | 1080x1920 | 9:16 | ## Twitter/X | Type | Dimensions | Aspect Ratio | |------|-----------|-------------| | Profile photo | 400x400 | 1:1 | | Header | 1500x500 | 3:1 | | In-stream image | 1200x675 | 16:9 | | Card image | 1200x628 | 1.91:1 | ## LinkedIn | Type | Dimensions | Aspect Ratio | |------|-----------|-------------| | Profile photo | 400x400 | 1:1 | | Background | 1584x396 | 4:1 | | Shared image | 1200x627 | 1.91:1 | | Company logo | 300x300 | 1:1 | ## Facebook | Type | Dimensions | Aspect Ratio | |------|-----------|-------------| | Profile photo | 170x170 | 1:1 | | Cover photo | 820x312 | 2.63:1 | | Shared image | 1200x630 | 1.91:1 | | Story | 1080x1920 | 9:16 | ## Pro Tips - Design at 2x resolution for Retina/high-DPI screens. - Keep important content centered (edges may be cropped in different views). - Test how images appear on both mobile and desktop before posting. ### CSS Units Explained: px, em, rem, vh, and When to Use Each CSS offers over a dozen length units, each suited to different situations. Understanding the differences between absolute and relative units is essential for building responsive, accessible interfaces. - URL: https://peasytools.com/guides/css-units-explained/ - Category: How-To - Reading time: 1 min - Words: 235 Key takeaways: - CSS units fall into two categories. - Pixels are the most intuitive unit but don't scale with user preferences. - The `em` unit is relative to the font size of the element's parent. - The `rem` unit is relative to the root element's font size (usually 16px). - `vw`: 1% of viewport width. Useful for full-width elements. ## Absolute vs Relative Units CSS units fall into two categories. Absolute units (like `px`) represent fixed measurements. Relative units (like `em`, `rem`, `%`) scale based on context. ## Pixels (px) Pixels are the most intuitive unit but don't scale with user preferences. On high-DPI screens, one CSS pixel may correspond to multiple device pixels. Use `px` for borders, shadows, and fine-grained control. ## em: Relative to Parent The `em` unit is relative to the font size of the element's parent. `1.5em` means 1.5 times the parent's font size. Be careful with nesting — em values compound, so a nested `1.2em` inside another `1.2em` results in `1.44em` relative to the root. ## rem: Relative to Root The `rem` unit is relative to the root element's font size (usually 16px). Unlike `em`, `rem` doesn't compound with nesting, making it more predictable for spacing and typography systems. ## Viewport Units (vw, vh, dvh) - `vw`: 1% of viewport width. Useful for full-width elements. - `vh`: 1% of viewport height. Tricky on mobile (includes/excludes address bar). - `dvh`: Dynamic viewport height. Accounts for mobile browser chrome. - `svh`: Small viewport height. Always the smallest possible viewport. ## Recommendations | Use Case | Recommended Unit | |----------|------------------| | Font sizes | `rem` | | Spacing/padding | `rem` or `em` | | Borders | `px` | | Full-screen layouts | `dvh` | | Responsive widths | `%` or `vw` | ### Color Theory for Digital Design: A Practical Guide Understanding color theory helps you create visually harmonious designs that communicate effectively. This guide covers color models, harmony rules, accessibility requirements, and practical palette-building techniques. - URL: https://peasytools.com/guides/color-theory-digital-design/ - Category: How-To - Reading time: 1 min - Words: 225 Key takeaways: - Color influences emotion, readability, and user behavior. - Screens display color by mixing Red, Green, and Blue light. - Colors opposite each other on the color wheel (e.g., blue and orange). - WCAG 2.1 requires minimum contrast ratios: ## Why Color Theory Matters Color influences emotion, readability, and user behavior. Studies show that color can increase brand recognition by up to 80% and that 85% of consumers cite color as the primary reason for choosing a product. ## Color Models ### RGB and Hex Screens display color by mixing Red, Green, and Blue light. Hex codes (#FF6B35) are a compact way to write RGB values. This additive model produces white when all channels are at maximum. ### HSL HSL (Hue, Saturation, Lightness) is more intuitive for designers. Adjusting saturation and lightness independently makes it easy to create consistent color palettes and accessible color pairs. ## Color Harmonies ### Complementary Colors opposite each other on the color wheel (e.g., blue and orange). Creates high contrast and visual tension. Best used for accent colors, not large areas. ### Analogous Colors adjacent on the wheel (e.g., blue, blue-green, green). Creates calm, cohesive palettes. Common in nature photography and brand identities. ### Triadic Three colors equally spaced on the wheel. Provides vibrant variety while maintaining balance. Often one color dominates while the others accent. ## Accessibility WCAG 2.1 requires minimum contrast ratios: - **Normal text**: 4.5:1 contrast ratio (AA), 7:1 (AAA) - **Large text**: 3:1 (AA), 4.5:1 (AAA) - **UI components**: 3:1 against adjacent colors Always test your color combinations with a contrast checker before finalizing designs. ### JSON vs YAML vs TOML: Choosing a Configuration Format Configuration files are the backbone of modern applications. JSON, YAML, and TOML each offer different trade-offs between readability, complexity, and tooling support that affect your development workflow. - URL: https://peasytools.com/guides/json-vs-yaml-vs-toml/ - Category: Comparison - Reading time: 1 min - Words: 244 Key takeaways: - Choosing a configuration format affects how easy your project is to set up, maintain, and debug. - JSON (JavaScript Object Notation) is the most widely supported data format. - YAML uses indentation instead of braces, making it more readable for complex nested structures. - TOML (Tom's Obvious Minimal Language) was designed specifically for configuration files. ## The Configuration Format Landscape Choosing a configuration format affects how easy your project is to set up, maintain, and debug. Each format has a loyal community and specific strengths. ## JSON: The Data Exchange Standard JSON (JavaScript Object Notation) is the most widely supported data format. Every programming language has a JSON parser, and it's the default for web APIs and package manifests. **Strengths:** Universal support, strict syntax, excellent tooling. **Weaknesses:** No comments, verbose (lots of quotes and braces), no trailing commas. ## YAML: Human-Readable Configuration YAML uses indentation instead of braces, making it more readable for complex nested structures. It's the default for Kubernetes, Docker Compose, GitHub Actions, and many CI/CD systems. **Strengths:** Readable, comments supported, multi-line strings, anchors/aliases. **Weaknesses:** Indentation-sensitive, implicit type coercion (e.g., `on` becomes boolean), complex spec. ## TOML: The Modern Alternative TOML (Tom's Obvious Minimal Language) was designed specifically for configuration files. It's used by Rust's Cargo, Python's pyproject.toml, and Hugo. **Strengths:** Comments, explicit types, readable, simple spec. **Weaknesses:** Deeply nested structures are awkward, less widespread tooling. ## Decision Matrix | Factor | JSON | YAML | TOML | |--------|------|------|------| | Comments | No | Yes | Yes | | Readability | Medium | High | High | | Complexity | Low | High | Low | | Trailing commas | No | N/A | Yes | | API data exchange | Best | Rare | Rare | | App configuration | Common | Common | Growing | ### Audio Format Guide: MP3 vs AAC vs FLAC vs WAV Audio formats balance file size against sound quality. This comparison covers the most common formats and helps you choose the right one for music, podcasts, voice recordings, and professional audio production. - URL: https://peasytools.com/guides/audio-format-comparison/ - Category: Comparison - Reading time: 1 min - Words: 253 Key takeaways: - Audio formats fall into two categories: lossy (which discard inaudible data to reduce size) and lossless (which preserve every bit of the original). - MP3 has been the standard compressed audio format since the late 1990s. - AAC (Advanced Audio Coding) achieves better sound quality than MP3 at the same bitrate. - FLAC compresses audio to about 50-70% of the original size with zero quality loss. - WAV files contain uncompressed PCM audio data. ## Lossy vs Lossless Audio formats fall into two categories: lossy (which discard inaudible data to reduce size) and lossless (which preserve every bit of the original). The right choice depends on your use case and audience. ## MP3: Universal Compatibility MP3 has been the standard compressed audio format since the late 1990s. At 128 kbps it's adequate for speech; at 192-320 kbps it's good for music. **Best for:** Maximum compatibility, podcast distribution, email attachments. ## AAC: Better Quality at Same Bitrate AAC (Advanced Audio Coding) achieves better sound quality than MP3 at the same bitrate. It's the default format for Apple Music, YouTube, and most streaming services. **Best for:** Streaming, mobile audio, iTunes/Apple ecosystem. ## FLAC: Lossless Compression FLAC compresses audio to about 50-70% of the original size with zero quality loss. It's the preferred format for audiophiles and music archival. **Best for:** Music archival, audiophile listening, master recordings. ## WAV: Uncompressed Standard WAV files contain uncompressed PCM audio data. They're large but require no decoding, making them ideal for audio editing and professional workflows. **Best for:** Audio editing, professional recording, sound design. ## Format Comparison | Format | Type | Typical Size (per minute) | Quality | |--------|------|--------------------------|--------| | WAV | Uncompressed | ~10 MB | Perfect | | FLAC | Lossless | ~5-7 MB | Perfect | | MP3 320 | Lossy | ~2.5 MB | Excellent | | AAC 256 | Lossy | ~2 MB | Excellent | | MP3 128 | Lossy | ~1 MB | Good | ### How to Use Scientific Notation and Number Formatting Scientific notation makes very large and very small numbers manageable. This guide covers notation systems, significant figures, and formatting conventions used in science, engineering, and finance. - URL: https://peasytools.com/guides/scientific-notation-number-formatting/ - Category: How-To - Reading time: 1 min - Words: 188 Key takeaways: - Writing 602,214,076,000,000,000,000,000 is unwieldy and error-prone. - A number between 1 and 10 multiplied by a power of 10: - Significant figures indicate the precision of a measurement: - Different regions use different separators: ## Why Scientific Notation? Writing 602,214,076,000,000,000,000,000 is unwieldy and error-prone. Scientific notation represents this as 6.022 x 10^23, making it compact, readable, and clear about precision. ## Notation Formats ### Standard Scientific A number between 1 and 10 multiplied by a power of 10: - 3,000,000 = 3.0 x 10^6 - 0.00045 = 4.5 x 10^-4 ### Engineering Notation Uses powers of 10 that are multiples of 3, aligning with SI prefixes: - 3,000,000 = 3.0 x 10^6 (mega) - 0.00045 = 450 x 10^-6 (micro) ## Significant Figures Significant figures indicate the precision of a measurement: - **Leading zeros**: Not significant (0.0045 has 2 sig figs). - **Trailing zeros after decimal**: Significant (3.00 has 3 sig figs). - **Trailing zeros without decimal**: Ambiguous (use sci notation to clarify). ## Number Formatting by Locale Different regions use different separators: | Locale | Number | Decimal | |--------|--------|---------| | US/UK | 1,234,567.89 | Period | | Germany/France | 1.234.567,89 | Comma | | India | 12,34,567.89 | Period | | Switzerland | 1'234'567.89 | Period | When building international applications, always use locale-aware formatting functions rather than hardcoding separators. ### Text Encoding Explained: UTF-8, ASCII, and Beyond Text encoding determines how characters are stored as bytes. Understanding UTF-8, ASCII, and other encodings prevents garbled text, mojibake, and data corruption in your applications and documents. - URL: https://peasytools.com/guides/text-encoding-utf8-ascii/ - Category: How-To - Reading time: 1 min - Words: 245 Key takeaways: - Computers store everything as numbers. - ASCII (American Standard Code for Information Interchange) maps 128 characters to numbers 0-127. - UTF-8 is the dominant encoding on the web (used by 98%+ of websites). - When text encoded in one system is decoded in another, you get mojibake — garbled characters like `é` instead of `e` or `???` instead of Chinese characters. - Unless you have a specific reason to use another encoding, always choose UTF-8. ## What Is Text Encoding? Computers store everything as numbers. Text encoding is the mapping between characters (letters, symbols, emoji) and the numbers that represent them. When sender and receiver use different encodings, text appears garbled. ## ASCII: The Foundation ASCII (American Standard Code for Information Interchange) maps 128 characters to numbers 0-127. It covers the English alphabet, digits, punctuation, and control characters. ASCII is a subset of virtually every modern encoding. ## UTF-8: The Universal Standard UTF-8 is the dominant encoding on the web (used by 98%+ of websites). It can represent every character in the Unicode standard — over 149,000 characters from all writing systems. **Key properties of UTF-8:** - ASCII-compatible: The first 128 characters use identical byte values. - Variable-width: Characters use 1-4 bytes depending on their code point. - Self-synchronizing: You can find character boundaries from any position. ## Common Encoding Issues ### Mojibake When text encoded in one system is decoded in another, you get mojibake — garbled characters like `é` instead of `e` or `???` instead of Chinese characters. ### BOM (Byte Order Mark) Some editors add a BOM (`EF BB BF`) at the start of UTF-8 files. While harmless in most contexts, it can cause issues in scripts, CSV files, and configuration files. ## Best Practice: Always Use UTF-8 Unless you have a specific reason to use another encoding, always choose UTF-8. It supports every language, is backward-compatible with ASCII, and is the expected default on modern systems. ### Video Codecs Explained: H.264, H.265, VP9, and AV1 Video codecs determine file size, quality, and compatibility. This guide compares the major codecs, from the ubiquitous H.264 to the next-generation AV1, to help you choose the right one for your project. - URL: https://peasytools.com/guides/video-codecs-explained/ - Category: Comparison - Reading time: 1 min - Words: 233 Key takeaways: - A codec (coder-decoder) compresses raw video data into a manageable file size. - H.264 has been the dominant video codec since 2003. - H.265 achieves 40-50% better compression than H.264 at equivalent quality. - VP9 is Google's royalty-free codec, roughly matching H.265 in efficiency. - AV1 offers 30% better compression than VP9/H.265. ## What Is a Video Codec? A codec (coder-decoder) compresses raw video data into a manageable file size. Without compression, one minute of 1080p video would be about 10 GB. Modern codecs reduce this to 50-150 MB with minimal quality loss. ## H.264 (AVC): The Universal Standard H.264 has been the dominant video codec since 2003. It's supported by every browser, every device, and every video platform. Hardware encoding and decoding are universal. **Best for:** Maximum compatibility, live streaming, video conferencing. ## H.265 (HEVC): Better Compression H.265 achieves 40-50% better compression than H.264 at equivalent quality. However, it's encumbered by patents and licensing fees, limiting adoption. **Best for:** 4K video, storage-constrained environments, Apple ecosystem. ## VP9: Google's Free Alternative VP9 is Google's royalty-free codec, roughly matching H.265 in efficiency. It's the primary codec for YouTube and is supported in most modern browsers. **Best for:** YouTube uploads, web video, Chrome-focused distribution. ## AV1: The Future AV1 offers 30% better compression than VP9/H.265. It's royalty-free and backed by major tech companies. Hardware decoding support is growing rapidly. **Best for:** Next-generation streaming, bandwidth-limited distribution. ## Quick Reference | Codec | Efficiency | Licensing | Browser Support | |-------|-----------|-----------|----------------| | H.264 | Baseline | Capped royalties | 99%+ | | H.265 | +40-50% | Complex licensing | ~75% | | VP9 | +40-50% | Royalty-free | ~95% | | AV1 | +60-70% | Royalty-free | ~85% | ### How to Merge PDF Files Without Losing Quality Combining multiple PDF documents into a single file is one of the most common document tasks. This guide walks you through merging PDFs while preserving bookmarks, links, and page formatting across all merged documents. - URL: https://peasytools.com/guides/how-to-merge-pdf-files/ - Category: How-To - Reading time: 1 min - Words: 231 Key takeaways: - Whether you're consolidating invoices, combining chapters of a report, or assembling a portfolio, merging PDFs saves time and keeps your documents organized. - Before merging, ensure all your PDF files are finalized. - When merging more than 10 files, consider working in batches. - Review and Download Always preview the merged PDF before downloading. ## Why Merge PDFs? Whether you're consolidating invoices, combining chapters of a report, or assembling a portfolio, merging PDFs saves time and keeps your documents organized. The key challenge is preserving the integrity of each source document during the merge process. ## Step-by-Step Guide ### 1. Prepare Your Files Before merging, ensure all your PDF files are finalized. Check that each document displays correctly and that any form fields or annotations are properly saved. Rename files in the order you want them to appear in the final document. ### 2. Choose Your Merge Method Client-side PDF merging processes your files entirely in the browser. No data is uploaded to a server, which makes it ideal for sensitive documents like contracts, financial statements, or medical records. ### 3. Arrange Page Order After selecting your files, you can drag and drop them into the desired order. Some tools also let you reorder individual pages across documents, giving you granular control over the final output. ### 4. Review and Download Always preview the merged PDF before downloading. Check that page numbers flow correctly, that no pages are missing, and that the file size is reasonable for your needs. ## Tips for Large Merges When merging more than 10 files, consider working in batches. Merge related documents first, then combine the intermediate files. This approach reduces memory usage and makes it easier to spot errors. ### File Format Conversion: A Complete Guide Converting files between formats is a daily task for professionals across every industry. This comprehensive guide covers document, image, audio, and video conversion principles that apply regardless of the specific tool. - URL: https://peasytools.com/guides/file-format-conversion-guide/ - Category: How-To - Reading time: 1 min - Words: 224 Key takeaways: - Regardless of the file type, certain principles apply to all conversions. - The most important concept in format conversion is whether data is lost: - Some features don't transfer between formats: - For converting many files at once: - Client-side conversion (in-browser) provides better privacy since files never leave your device. ## Universal Conversion Principles Regardless of the file type, certain principles apply to all conversions. ## Lossy vs Lossless The most important concept in format conversion is whether data is lost: - **Lossless**: FLAC to WAV, PNG to BMP — no quality loss, fully reversible. - **Lossy**: WAV to MP3, PNG to JPEG — some data is permanently discarded. - **Transcoding**: MP3 to AAC — compound quality loss from re-compression. **Golden rule:** Always convert from the highest quality source available. Never convert between lossy formats if you can avoid it. ## Feature Compatibility Some features don't transfer between formats: | Source Feature | May Be Lost In | |---------------|---------------| | Transparency (PNG) | JPEG | | Layers (PSD) | PNG, JPEG | | Formulas (XLSX) | CSV | | Hyperlinks (DOCX) | Plain text | | Animations (GIF) | PNG, JPEG | | Metadata (EXIF) | Varies by tool | ## Batch Conversion For converting many files at once: 1. **Test first**: Convert a small sample and verify quality. 2. **Consistent settings**: Apply the same parameters to all files. 3. **Preserve originals**: Never overwrite source files. 4. **Naming conventions**: Use consistent output file naming. ## Client-Side vs Server-Side Client-side conversion (in-browser) provides better privacy since files never leave your device. Server-side conversion typically handles larger files and more formats but requires uploading your data. ### How to Compress Images for the Web Learn how to reduce image file sizes for faster web page loading without visible quality loss. This guide covers lossy and lossless compression techniques, format selection, and recommended quality settings. - URL: https://peasytools.com/guides/how-to-compress-images-for-web/ - Category: How-To - Reading time: 1 min - Words: 186 ## Why Image Compression Matters Images typically account for 50-75% of a web page's total size. Unoptimized images slow page loads, hurt Core Web Vitals scores, and increase bandwidth costs. Proper compression can reduce image sizes by 60-80% with minimal visible quality loss. ## Lossy vs Lossless Compression **Lossy** compression (JPEG, WebP lossy) permanently removes data humans are unlikely to notice. A JPEG at quality 82-85 is visually indistinguishable from the original for most photographs. **Lossless** compression (PNG, WebP lossless) reduces file size without removing any data. Best for screenshots, logos, and images with text. ## Recommended Settings | Format | Quality | Use Case | |--------|---------|----------| | JPEG | 80-85 | Photographs | | WebP | 75-82 | All image types | | PNG | Max compression | Screenshots, logos | | AVIF | 60-70 | Modern browsers | ## Quick Steps 1. Choose the right format for your content type 2. Resize to the maximum display dimensions needed 3. Apply compression at the recommended quality level 4. Compare original and compressed versions side by side 5. Verify the file size reduction meets your target ### How to Generate Strong Random Passwords Password generation requires cryptographic randomness and careful character selection. This guide covers the principles behind strong password generation, entropy calculation, and common generation mistakes to avoid. - URL: https://peasytools.com/guides/generate-strong-random-passwords/ - Category: How-To - Reading time: 1 min - Words: 224 Key takeaways: - Password strength is measured in entropy — the number of bits of randomness. - Entropy = log2(character_set_size ^ password_length) - Never use `Math.random()` or similar pseudo-random functions for password generation. - Random word passphrases (like "correct horse battery staple") offer high entropy while being memorizable. - Using common substitutions (p@ssw0rd) — these are in every cracking dictionary. ## What Makes a Password Strong? Password strength is measured in entropy — the number of bits of randomness. Higher entropy means more possible combinations, making brute-force attacks impractical. ## Entropy Calculation Entropy = log2(character_set_size ^ password_length) | Character Set | Pool Size | 12-char Entropy | 16-char Entropy | |--------------|-----------|-----------------|----------------| | Lowercase only | 26 | 56 bits | 75 bits | | Mixed case | 52 | 68 bits | 91 bits | | Mixed + digits | 62 | 71 bits | 95 bits | | Mixed + digits + symbols | 95 | 79 bits | 105 bits | A password with 80+ bits of entropy is considered strong for most purposes. ## Cryptographic Randomness Never use `Math.random()` or similar pseudo-random functions for password generation. These are predictable. Use cryptographically secure random number generators (CSPRNG): - JavaScript: `crypto.getRandomValues()` - Python: `secrets` module - Node.js: `crypto.randomBytes()` ## Passphrase Alternative Random word passphrases (like "correct horse battery staple") offer high entropy while being memorizable. A 4-word passphrase from a 7776-word list (Diceware) provides 51 bits of entropy; 6 words provides 77 bits. ## Common Mistakes - Using common substitutions (p@ssw0rd) — these are in every cracking dictionary. - Truncating generated passwords to meet site limits (reduces entropy). - Generating passwords that don't meet the site's character requirements. - Using non-cryptographic random sources. ### How to Check if Your Password Has Been Compromised Data breaches expose millions of passwords regularly. Learn how to check whether your credentials have been leaked without risking further exposure, using k-anonymity-based services and local hash comparison. - URL: https://peasytools.com/guides/check-password-compromised/ - Category: How-To - Reading time: 1 min - Words: 243 Key takeaways: - As of 2025, over 12 billion account credentials have been exposed in data breaches. - The safest way to check a password uses k-anonymity: your password is hashed locally, and only the first 5 characters of the hash are sent to the server. - Use at least 12 characters (16+ for important accounts). - Passwords alone are increasingly insufficient. - ## Password Strength Tips - Use at least 12 characters (16+ for important accounts). ## The Breach Landscape As of 2025, over 12 billion account credentials have been exposed in data breaches. Many people reuse passwords across sites, meaning a single breach can compromise multiple accounts. ## Safe Checking Methods ### K-Anonymity (Have I Been Pwned) The safest way to check a password uses k-anonymity: your password is hashed locally, and only the first 5 characters of the hash are sent to the server. The server returns all matching hashes, and your device checks for a match locally. Your full password never leaves your device. ### Local Hash Comparison Download the hash database and check locally. This provides maximum privacy as no data leaves your machine, but requires downloading a multi-gigabyte file. ## What to Do If Your Password Is Compromised 1. **Change the password immediately** on the affected service. 2. **Change it everywhere** you used the same password. 3. **Enable two-factor authentication** on the account. 4. **Use a password manager** to generate unique passwords going forward. 5. **Check for unauthorized activity** on the affected account. ## Password Strength Tips - Use at least 12 characters (16+ for important accounts). - Avoid dictionary words, names, dates, and keyboard patterns. - Use a passphrase: random words strung together (e.g., "correct horse battery staple"). - Never reuse passwords across services. - Use a password manager to handle complexity. ## Beyond Passwords Passwords alone are increasingly insufficient. Enable multi-factor authentication (MFA) using authenticator apps or hardware security keys wherever possible. ### QR Code Generation: Best Practices for Print and Digital QR codes bridge physical and digital experiences, but poorly generated codes fail to scan. This guide covers sizing, error correction, design customization, and testing best practices for reliable QR codes. - URL: https://peasytools.com/guides/qr-code-generation-best-practices/ - Category: Best Practice - Reading time: 1 min - Words: 262 Key takeaways: - QR (Quick Response) codes store data in a two-dimensional barcode pattern. - The minimum QR code size depends on the scanning distance: - QR codes have four error correction levels that determine how much damage the code can sustain while remaining scannable: - You can customize QR codes while maintaining scannability: - Always test QR codes on multiple devices and under various lighting conditions before printing. ## QR Code Fundamentals QR (Quick Response) codes store data in a two-dimensional barcode pattern. They can encode URLs, text, phone numbers, Wi-Fi credentials, calendar events, and other structured data. ## Size Guidelines The minimum QR code size depends on the scanning distance: | Scanning Distance | Minimum QR Size | |-------------------|----------------| | 10 cm (phone held close) | 2 cm x 2 cm | | 30 cm (business card) | 2.5 cm x 2.5 cm | | 1 m (poster) | 10 cm x 10 cm | | 3 m (sign) | 30 cm x 30 cm | General rule: QR code width should be 1/10th of the scanning distance. ## Error Correction Levels QR codes have four error correction levels that determine how much damage the code can sustain while remaining scannable: - **L (Low, 7%)**: Smallest QR code, least redundancy. - **M (Medium, 15%)**: Good balance for most uses. - **Q (Quartile, 25%)**: Good for printed materials that may get worn. - **H (High, 30%)**: Best for codes with logo overlays. ## Design Customization You can customize QR codes while maintaining scannability: - **Colors**: Use dark modules on light backgrounds. Maintain at least 40% contrast. - **Logo overlay**: Place in the center over the error correction area. Use Level H. - **Rounded corners**: Slight rounding is fine; extreme rounding reduces scan reliability. - **Quiet zone**: Keep the white border (at least 4 modules wide). ## Testing Always test QR codes on multiple devices and under various lighting conditions before printing. Test with at least 3 different QR scanner apps. ### Meta Tags for SEO: Title, Description, and Open Graph Meta tags control how your pages appear in search results and social media shares. This guide covers the essential meta tags for SEO, Open Graph for social sharing, and Twitter Card markup. - URL: https://peasytools.com/guides/meta-tags-seo-guide/ - Category: How-To - Reading time: 1 min - Words: 243 Key takeaways: - Meta tags live in the `<head>` of your HTML and provide information about your page to search engines and social platforms. - The title tag is the single most important on-page SEO element. - The meta description doesn't directly affect rankings but influences click-through rates. - Open Graph controls how your pages appear when shared on Facebook, LinkedIn, and other social platforms: - Twitter uses its own meta tags (`twitter:card`, `twitter:title`, etc.) but falls back to Open Graph tags when Twitter-specific tags are absent. ## Essential Meta Tags Meta tags live in the `<head>` of your HTML and provide information about your page to search engines and social platforms. ## Title Tag The title tag is the single most important on-page SEO element. It appears in search results, browser tabs, and social shares. **Best practices:** - Keep under 60 characters to avoid truncation. - Place your primary keyword near the beginning. - Include your brand name at the end. - Make each page's title unique. ## Meta Description The meta description doesn't directly affect rankings but influences click-through rates. It's your 155-character pitch to searchers. **Best practices:** - Accurately summarize the page content. - Include a call to action. - Include your target keyword (Google bolds matching terms). - Unique per page. ## Open Graph Tags Open Graph controls how your pages appear when shared on Facebook, LinkedIn, and other social platforms: - `og:title` — Title shown in social cards. - `og:description` — Description shown in social cards. - `og:image` — Image displayed (recommended: 1200x630px). - `og:url` — Canonical URL of the page. - `og:type` — Content type (website, article, product). ## Twitter Cards Twitter uses its own meta tags (`twitter:card`, `twitter:title`, etc.) but falls back to Open Graph tags when Twitter-specific tags are absent. ## Common Mistakes - Duplicate titles across many pages. - Missing og:image (social shares show no preview). - Title tag too long (truncated with ...). - Meta description too short or generic. ### How to Convert Images Between Formats A practical guide to converting between image formats like JPEG, PNG, WebP, SVG, and HEIC. Learn which conversions are lossless, which involve quality trade-offs, and which format to choose for different use cases. - URL: https://peasytools.com/guides/how-to-convert-images-between-formats/ - Category: How-To - Reading time: 1 min - Words: 195 Key takeaways: - Image format conversion changes how pixel data is stored and compressed. - The most common conversion: iPhone photos saved as HEIC need to be converted to JPEG for universal sharing. - ### SVG to PNG (Rasterization) Vector SVG files must be rasterized to PNG for platforms that require bitmap images. ## Understanding Format Conversion Image format conversion changes how pixel data is stored and compressed. Some conversions are lossless (PNG to WebP lossless), while others involve quality decisions (JPEG to WebP lossy). Understanding the trade-offs helps you choose the right approach. ## Common Conversion Scenarios ### HEIC to JPEG (iPhone Photos) The most common conversion: iPhone photos saved as HEIC need to be converted to JPEG for universal sharing. Use quality 92+ to preserve the HEIC quality advantage. ### PNG to WebP (Web Optimization) Converting PNG to WebP lossless typically saves 25-35% file size with identical quality. For photographs stored as PNG, WebP lossy at quality 85 provides even greater savings. ### SVG to PNG (Rasterization) Vector SVG files must be rasterized to PNG for platforms that require bitmap images. Always specify the output resolution and use 2x dimensions for Retina displays. ## Conversion Quality Matrix | From | To | Quality Impact | |------|-----|---------------| | PNG | WebP lossless | Lossless | | JPEG | WebP lossy | Minimal loss | | HEIC | JPEG | Slight loss | | SVG | PNG | Resolution-dependent | | BMP | PNG | Lossless (smaller) | ### How to Resize Images Without Losing Quality Master image resizing techniques that preserve sharpness and detail. Understand interpolation methods, when to use each algorithm, and how to resize for specific platforms like social media and email. - URL: https://peasytools.com/guides/how-to-resize-images-without-losing-quality/ - Category: How-To - Reading time: 1 min - Words: 184 Key takeaways: - When you resize an image, the software must calculate new pixel values using interpolation algorithms. - Instagram: 1080x1080 (square), 1080x1350 (portrait) - ## The Science of Image Resizing When you resize an image, the software must calculate new pixel values using interpolation algorithms. - Always resize from the largest source — never upscale a previously downscaled image 2. ## The Science of Image Resizing When you resize an image, the software must calculate new pixel values using interpolation algorithms. Downscaling (making smaller) is generally safe, while upscaling (making larger) always involves quality trade-offs since no algorithm can create detail that does not exist. ## Interpolation Methods | Algorithm | Speed | Quality | Best For | |-----------|-------|---------|----------| | Nearest Neighbor | Fastest | Blocky | Pixel art | | Bilinear | Fast | Smooth | Quick previews | | Bicubic | Medium | Sharp | General use | | Lanczos | Slow | Sharpest | Final output | ## Best Practices 1. **Always resize from the largest source** — never upscale a previously downscaled image 2. **Maintain aspect ratio** to avoid distortion (lock the ratio control) 3. **Use Lanczos** for final production images, bicubic for drafts 4. **Apply mild sharpening** after downscaling to restore edge clarity 5. **Save in a lossless format** (PNG) before applying final compression ## Common Platform Sizes - Instagram: 1080x1080 (square), 1080x1350 (portrait) - Twitter/X: 1200x675 (2:1 ratio) - Facebook: 1200x630 (link preview) - Email: 600px wide maximum ### How to Optimize Images for SEO Optimize images for search engine visibility and faster page loads. Learn about alt text, file naming, compression, responsive images, lazy loading, and structured data for image SEO. - URL: https://peasytools.com/guides/how-to-optimize-images-for-seo/ - Category: How-To - Reading time: 1 min - Words: 192 ## Image SEO Fundamentals Images appear in Google Image Search, generate traffic, and affect page ranking through Core Web Vitals. Properly optimized images load fast, are discoverable by search engines, and provide context to crawlers. ## Key Optimization Factors ### File Names Use descriptive, keyword-rich file names separated by hyphens: `blue-mountain-sunrise.jpg` instead of `IMG_4532.jpg`. Search engines use file names as ranking signals. ### Alt Text Write descriptive alt attributes that explain the image content. Alt text serves screen readers and helps search engines understand the image. Keep it under 125 characters. ### File Size & Format Use WebP or AVIF for the best compression-to-quality ratio. Aim for images under 200KB for standard content images and under 100KB for thumbnails. ### Responsive Images Use `srcset` and `sizes` attributes to serve appropriately sized images for each device width. This prevents mobile devices from downloading desktop-sized images. ## Quick Checklist 1. Descriptive file name with target keywords 2. Alt text describing image content (not stuffed with keywords) 3. Compressed to under 200KB using WebP or optimized JPEG 4. Correct dimensions (do not rely on CSS to resize) 5. Lazy loading with `loading="lazy"` for below-fold images ### JPEG vs PNG — Which Image Format Should You Use? A detailed comparison of JPEG and PNG image formats covering compression methods, quality characteristics, transparency, and ideal use cases. Learn when to choose each format for web, print, and design projects. - URL: https://peasytools.com/guides/jpg-vs-png-which-format-to-use/ - Category: Comparison - Reading time: 1 min - Words: 206 Key takeaways: - JPEG excels for photographs and images with smooth gradients where lossy compression artifacts are not noticeable. - PNG is the right choice when you need transparency, pixel-perfect quality for screenshots and text, or lossless storage for graphics and logos. - WebP offers both lossy and lossless compression with transparency support, often producing files 25-35% smaller than either JPEG or PNG. ## JPEG vs PNG at a Glance | Feature | JPEG | PNG | |---------|------|-----| | Compression | Lossy | Lossless | | Transparency | No | Yes (alpha) | | Colors | 16.7M | 16.7M + alpha | | Best for | Photos | Graphics, text | | Typical size | Smaller | Larger | ## When to Use JPEG JPEG excels for photographs and images with smooth gradients where lossy compression artifacts are not noticeable. At quality 80-85, JPEG files are typically 5-10x smaller than equivalent PNGs for photographic content. ## When to Use PNG PNG is the right choice when you need transparency, pixel-perfect quality for screenshots and text, or lossless storage for graphics and logos. PNG files can be smaller than JPEG for images with large areas of solid color. ## The Modern Alternative: WebP WebP offers both lossy and lossless compression with transparency support, often producing files 25-35% smaller than either JPEG or PNG. Consider WebP when browser compatibility is not a concern. ## Decision Flowchart 1. Need transparency? &rarr; **PNG** (or WebP) 2. Photograph or complex image? &rarr; **JPEG** (or WebP) 3. Screenshot, logo, or text? &rarr; **PNG** (or WebP lossless) 4. Will be edited further? &rarr; **PNG** (lossless master) ### WebP vs JPEG — Modern Image Format Comparison Compare WebP and JPEG for web image delivery. Learn about compression efficiency, quality differences, browser support, and when to migrate from JPEG to WebP for faster page loads. - URL: https://peasytools.com/guides/webp-vs-jpg-modern-image-formats/ - Category: Comparison - Reading time: 1 min - Words: 187 Key takeaways: - At equivalent visual quality (SSIM), WebP produces files 25-35% smaller than JPEG. - WebP is supported by Chrome, Firefox, Safari (14.1+), and Edge. - For new projects, WebP should be the default image format. ## WebP vs JPEG Comparison | Feature | JPEG | WebP | |---------|------|------| | Year | 1992 | 2010 | | Compression | DCT lossy | VP8 lossy + lossless | | Transparency | No | Yes | | Animation | No | Yes | | Size (same quality) | Baseline | 25-35% smaller | | Browser support | 100% | 97%+ | ## Compression Efficiency At equivalent visual quality (SSIM), WebP produces files 25-35% smaller than JPEG. The savings come from VP8's more advanced prediction and entropy coding compared to JPEG's 1992-era DCT. ## Browser Support WebP is supported by Chrome, Firefox, Safari (14.1+), and Edge. The remaining ~3% of browsers that lack support are primarily older Safari versions. Use `<picture>` with JPEG fallback. ## Should You Switch? For new projects, WebP should be the default image format. For existing sites, prioritize converting hero images and thumbnails first, as these provide the most performance impact. ## Migration Strategy 1. Generate WebP versions alongside existing JPEGs 2. Use `<picture>` element with WebP source and JPEG fallback 3. Configure server to serve WebP via Accept header (content negotiation) ### Image Optimization Best Practices for Web Performance A comprehensive guide to optimizing images for web performance, covering format selection, compression settings, responsive delivery, lazy loading, and CDN strategies to achieve fast Core Web Vitals scores. - URL: https://peasytools.com/guides/image-optimization-best-practices/ - Category: Best Practice - Reading time: 1 min - Words: 162 Key takeaways: - Image optimization balances visual quality against file size and loading speed. - Use a format cascade: serve AVIF to browsers that support it, WebP as the primary fallback, and JPEG or PNG as the universal baseline. - Photographs**: JPEG 80-85, WebP 75-82, AVIF 60-70 - Generate multiple sizes and use `srcset` to serve the right one: - Add `loading="lazy"` to images below the fold. ## Core Principles Image optimization balances visual quality against file size and loading speed. The goal is to deliver the smallest file that is visually indistinguishable from the original at the display size. ## Format Selection Use a format cascade: serve AVIF to browsers that support it, WebP as the primary fallback, and JPEG or PNG as the universal baseline. Implement this with the `<picture>` element. ```html <picture> <source srcset="image.avif" type="image/avif"> <source srcset="image.webp" type="image/webp"> <img src="image.jpg" alt="Description"> </picture> ``` ## Compression Guidelines - **Photographs**: JPEG 80-85, WebP 75-82, AVIF 60-70 - **Graphics with text**: PNG (lossless) or WebP lossless - **Icons/logos**: SVG (vector) or PNG - **Thumbnails**: Aggressive compression (JPEG 60-70) is acceptable ## Responsive Images Generate multiple sizes and use `srcset` to serve the right one: - 400w for mobile - 800w for tablet - 1200w for desktop - 1600w for high-DPI desktop ## Lazy Loading Add `loading="lazy"` to images below the fold. Keep hero images and LCP elements as `eager`. ### Accessibility Guide for Online Tool Design Online tools must be usable by everyone, including people with visual, motor, and cognitive disabilities. Learn the key accessibility patterns for interactive web applications. - URL: https://peasytools.com/guides/accessibility-guide-online-tool-design/ - Category: Best Practice - Reading time: 1 min - Words: 290 Key takeaways: - Online tools are interactive by nature — they require input, display output, and involve multi-step workflows. - This complexity makes accessibility both more challenging and more important than for static content. - ### Keyboard Navigation Every function must be operable with a keyboard alone. - Focus indicators must be visible (see CSS focus styles guide). ## Why Tool Accessibility Matters Online tools are interactive by nature — they require input, display output, and involve multi-step workflows. This complexity makes accessibility both more challenging and more important than for static content. An inaccessible tool excludes a significant portion of potential users and may violate legal requirements (ADA, EAA, Section 508). ### Keyboard Navigation Every function must be operable with a keyboard alone. Tab order must follow a logical sequence through the interface. Focus indicators must be visible (see CSS focus styles guide). Custom controls (drag-and-drop, sliders) must have keyboard alternatives. Trap focus inside modal dialogs to prevent keyboard users from getting lost behind the dialog. ### Screen Reader Compatibility Label all form inputs with visible `<label>` elements. Use ARIA roles and states for custom components: `role="tabpanel"` for tabs, `aria-expanded` for collapsible sections, `aria-live="polite"` for dynamically updated content (like processing results). Announce errors immediately using `role="alert"`. Provide text alternatives for all visual output. ### Color and Contrast Don't convey information through color alone — add text labels, patterns, or icons. Ensure all text meets WCAG AA contrast ratios (4.5:1 for normal text, 3:1 for large text). UI controls and focus indicators need 3:1 contrast against adjacent colors. ### Error Handling Identify errors clearly with both text and visual indicators (not just red borders). Describe what went wrong and how to fix it. Don't clear the user's input on error — let them correct it. Place error messages near the relevant input field and announce them to screen readers. ### Cognitive Accessibility Use clear, simple language in instructions and labels. Break complex processes into discrete steps with progress indicators. Provide examples of expected input format. Don't auto-submit — let users review before processing. Offer undo functionality where possible. ### Instagram Reels Optimization: Formats, Timing, and Algorithm Signals Instagram Reels compete for attention in a fast-scrolling vertical feed. Understanding the technical requirements, optimal posting cadence, and the signals that drive algorithmic distribution is essential for organic reach. - URL: https://peasytools.com/guides/instagram-reels-optimization-guide/ - Category: How-To - Reading time: 2 min - Words: 315 Key takeaways: - Instagram Reels accept vertical video at a 9:16 aspect ratio with a recommended resolution of 1080×1920 pixels. - Instagram's recommendation engine evaluates Reels on several signals: - The first frame must hook attention within 0.3 seconds — before the user's thumb scrolls past. - Reels captions support up to 2,200 characters but only the first 55 are visible before truncation. - Consistency matters more than volume. ## Reels Technical Specifications Instagram Reels accept vertical video at a 9:16 aspect ratio with a recommended resolution of 1080×1920 pixels. Maximum duration is 90 seconds, though the algorithm tends to favor videos between 15 and 30 seconds for discovery. File format should be MP4 with H.264 encoding. Maximum file size is 250 MB, but keeping videos under 50 MB ensures faster upload and processing. ## Algorithm Signals That Matter Instagram's recommendation engine evaluates Reels on several signals: - **Watch-through rate** — The percentage of viewers who watch to the end. This is the strongest signal. A 7-second Reel watched fully outranks a 60-second Reel abandoned at 10%. - **Replay rate** — Reels that loop or get rewatched signal high engagement. - **Shares to DMs** — Private shares indicate content worth recommending. - **Saves** — Bookmarks signal long-term value. - **Comments** — Especially comments with more than three words indicate genuine engagement. ## Content Structure for Retention The first frame must hook attention within 0.3 seconds — before the user's thumb scrolls past. Open with motion, a surprising visual, or on-screen text that poses a question. Avoid static title cards or slow logo animations. Structure the narrative as a loop: end the video in a way that connects back to the opening frame, encouraging replays. ## Caption and Hashtag Strategy Reels captions support up to 2,200 characters but only the first 55 are visible before truncation. Front-load the hook in those 55 characters. Use 3-5 targeted hashtags rather than the maximum 30 — over-tagging dilutes topical relevance. Mix one broad hashtag (#fitness), one medium (#homeworkout), and one niche (#30minuteHIIT). ## Posting Cadence Consistency matters more than volume. Three Reels per week posted at consistent times outperforms daily posting with irregular gaps. Use Instagram Insights to identify when your specific audience … ### TikTok Content Strategy: From Concept to Viral Distribution TikTok's algorithm rewards content quality over follower count, giving new creators a genuine shot at broad distribution. Building a sustainable TikTok strategy requires understanding the platform's unique content lifecycle. - URL: https://peasytools.com/guides/tiktok-content-strategy-guide/ - Category: Best Practice - Reading time: 2 min - Words: 304 Key takeaways: - Every TikTok video enters a testing pool of roughly 200-500 viewers regardless of the creator's follower count. - Sustainable TikTok accounts operate on 3-4 content pillars — recurring themes that define what the audience expects. - TikTok's average watch time before a scroll decision is 1.0-1.5 seconds. - Using trending audio is not mandatory but dramatically increases discovery. - Post 1-3 times daily during the growth phase, then taper to 4-7 per week once you establish a baseline audience. ## How TikTok Distribution Works Every TikTok video enters a testing pool of roughly 200-500 viewers regardless of the creator's follower count. If performance metrics — watch-through rate, shares, comments, and likes — exceed a threshold, the video is promoted to a larger pool of 1,000-5,000 viewers. This cascading test continues through progressively larger audiences. A video can go from zero to one million views without the creator having any existing following. ## Content Pillars Sustainable TikTok accounts operate on 3-4 content pillars — recurring themes that define what the audience expects. A fitness creator might use: workout tutorials (educational), meal prep (practical), gym fails (entertainment), and transformation stories (inspirational). Each pillar attracts a slightly different segment while maintaining topical coherence. ## Hook Engineering TikTok's average watch time before a scroll decision is 1.0-1.5 seconds. Effective hooks fall into categories: - **Curiosity gap** — 'I can't believe this actually works' - **Pattern interrupt** — Unexpected visual or sound in the first frame - **Direct address** — 'If you're struggling with X, watch this' - **Controversial take** — A bold opinion that demands a response The hook must appear in the first second, not after a 3-second intro. ## Trending Audio Strategy Using trending audio is not mandatory but dramatically increases discovery. The Creative Center (trends.tiktok.com) shows rising sounds before they peak. When using a trending audio, the first 3 seconds of the sound matter most — TikTok's algorithm associates content with the audio's opening signature. ## Posting Frequency and Timing Post 1-3 times daily during the growth phase, then taper to 4-7 per week once you establish a baseline audience. TikTok's algorithm deprioritizes accounts that go silent for more than 7 days. Schedule posts during your audience's peak activity windows using TikTok Analytics, typically 7-9 AM and 7-11 PM in … ### QR Code Design Best Practices: Balancing Aesthetics and Scannability A QR code that looks great but fails to scan is worse than useless. Understanding the relationship between visual customization and error correction ensures reliable scanning across all devices and environments. - URL: https://peasytools.com/guides/qr-code-design-best-practices/ - Category: Best Practice - Reading time: 1 min - Words: 296 Key takeaways: - QR scanners rely on three finder patterns (the large squares in three corners) to locate and orient the code. - The center of a QR code is the safest area for logos or graphics. - Minimum contrast ratio:** 4:1 between foreground and background - The quiet zone (blank border around the code) must be at least 4 modules wide. - Test every custom QR code with at least three different scanning apps on both iOS and Android. ## How QR Scanners Read Codes QR scanners rely on three finder patterns (the large squares in three corners) to locate and orient the code. They then read the timing patterns (alternating modules between finders) to establish the grid, and finally decode the data modules. Any design modification that disrupts these structural elements will cause scan failures. ## Safe Customization Zones The center of a QR code is the safest area for logos or graphics. With error correction level H (30% redundancy), up to 25-30% of the data area can be obscured while maintaining scannability. This does not mean 30% of the entire code — the finder patterns, timing patterns, and format information must remain untouched. ## Color Rules - **Minimum contrast ratio:** 4:1 between foreground and background - **Dark on light only:** QR scanners expect dark modules on a light background. Inverted (light on dark) codes fail on many older scanner apps. - **Avoid gradients on modules:** Individual modules must have uniform color - **Background must be truly light:** Off-white, light pastels work. Medium gray reduces contrast below the scanning threshold. ## Size and Quiet Zone The quiet zone (blank border around the code) must be at least 4 modules wide. Many design failures happen when the QR code is placed on a busy background without sufficient quiet zone. The minimum printable size depends on scanning distance — a general rule is 10:1 ratio (10 cm code scans reliably at 1 meter). ## Testing Protocol Test every custom QR code with at least three different scanning apps on both iOS and Android. Test at the intended viewing distance, in the intended lighting conditions, and on the intended material (screen, paper, fabric). What scans perfectly on a high-resolution screen may fail when printed on textured cardstock. ### Audio Format Comparison: MP3, AAC, FLAC, OGG, and WAV Choosing the right audio format involves trade-offs between file size, audio quality, compatibility, and intended use case. This comparison covers the five most common formats and when to use each one. - URL: https://peasytools.com/guides/audio-format-comparison-mp3-aac-flac/ - Category: Comparison - Reading time: 2 min - Words: 341 Key takeaways: - Lossy codecs (MP3, AAC, OGG) permanently discard audio data deemed inaudible by psychoacoustic models. - The oldest widely-supported lossy format (1993). - The successor to MP3, used as the default format by Apple Music, YouTube, and most streaming services. - WAV:** Recording, editing, and mastering (uncompressed working format) - Essential for archiving, mastering, and audiophile playback. ## Format Overview | Format | Type | Typical Bitrate | File Size (4 min song) | Quality | |--------|------|----------------|----------------------|--------| | WAV | Uncompressed | 1,411 kbps | ~42 MB | Reference | | FLAC | Lossless | 800-1,200 kbps | ~25 MB | Identical to source | | AAC | Lossy | 128-256 kbps | ~6-8 MB | Excellent at 256 kbps | | MP3 | Lossy | 128-320 kbps | ~4-10 MB | Good at 320 kbps | | OGG Vorbis | Lossy | 96-320 kbps | ~4-10 MB | Excellent at 192 kbps | ## Lossy vs. Lossless Lossy codecs (MP3, AAC, OGG) permanently discard audio data deemed inaudible by psychoacoustic models. At high bitrates (256+ kbps), the difference from the original is imperceptible to most listeners in normal listening conditions. Lossless codecs (FLAC) compress without discarding data — the decoded output is bit-identical to the original. ## MP3 The oldest widely-supported lossy format (1993). MP3 at 320 kbps is nearly transparent (indistinguishable from the original) for most listeners. At 128 kbps, artifacts become noticeable on complex material — cymbals sound metallic, and reverb tails become grainy. MP3's advantage is universal compatibility: every device and application supports it. ## AAC The successor to MP3, used as the default format by Apple Music, YouTube, and most streaming services. AAC achieves better quality than MP3 at equivalent bitrates — AAC at 128 kbps sounds comparable to MP3 at 160 kbps. The most efficient lossy codec for general use. ## FLAC The standard lossless format. FLAC files are 50-70% of the original WAV size with zero quality loss. Essential for archiving, mastering, and audiophile playback. Supported by most modern devices except Apple's ecosystem (which prefers ALAC, Apple's lossless codec). ## When to Use Each Format - **WAV:** Recording, editing, and … ### LinkedIn Post Formatting: Maximizing Professional Engagement LinkedIn's feed algorithm heavily favors native text posts with specific formatting patterns. Understanding how LinkedIn renders content and what drives professional engagement can significantly increase post visibility. - URL: https://peasytools.com/guides/linkedin-post-formatting-guide/ - Category: How-To - Reading time: 2 min - Words: 332 Key takeaways: - LinkedIn classifies content into three quality buckets: spam, low-quality, and high-quality. - LinkedIn truncates posts after approximately 210 characters with a 'see more' link. - The professional audience peaks Tuesday through Thursday, 7-8 AM and 12-1 PM in the target timezone. ## How the LinkedIn Feed Works LinkedIn classifies content into three quality buckets: spam, low-quality, and high-quality. High-quality posts enter a testing phase where they are shown to a subset of your connections. If engagement (reactions, comments, reposts) exceeds average performance for your account, distribution expands to second and third-degree connections. ## The Anatomy of a High-Performing Post ### The Hook (First 2 Lines) LinkedIn truncates posts after approximately 210 characters with a 'see more' link. The click-through rate on this link is a strong ranking signal. Write the first two lines as a standalone hook that creates urgency to expand. Avoid generic openings like 'I'm excited to announce' — instead lead with a specific insight, statistic, or contrarian observation. ### Body Structure LinkedIn renders line breaks literally, making whitespace a formatting tool. Use single-sentence paragraphs separated by blank lines for readability on mobile. Bullet points work but numbered lists perform slightly better because they imply a sequence worth completing. ### The Close End with a specific call-to-action that invites comments. 'What do you think?' is too vague. Instead, pose a binary choice ('Do you agree that X or Y?') or ask for a personal experience ('What's the hardest lesson you learned in your first management role?'). Comments are weighted 4-5x heavier than reactions in the algorithm. ## Content Types by Performance | Format | Avg. Reach | Best For | |--------|-----------|----------| | Text-only | High | Personal stories, insights | | Text + single image | Medium-High | Data, infographics | | Carousel (PDF) | High | Step-by-step guides | | Video | Medium | Demonstrations, interviews | | External link | Low | Sharing articles (algorithm deprioritizes) | | Poll | High (but shallow) | Quick engagement, less meaningful | ## Timing and Frequency The professional audience peaks … ### QR Codes for Restaurant Menus: Implementation Guide Contactless menus via QR codes became standard during the pandemic and remain popular for cost savings and easy updates. Implementing them well requires attention to scanning ergonomics, loading speed, and accessibility. - URL: https://peasytools.com/guides/qr-codes-restaurant-menus/ - Category: How-To - Reading time: 2 min - Words: 342 Key takeaways: - Beyond hygiene, QR menus eliminate printing costs ($500-2,000/year for a typical restaurant), allow instant menu updates (86'd items, daily specials, seasonal changes), and enable analytics on which items customers view most. - Place QR codes where diners naturally look: table tents, table stickers near the edge, or embedded in the table surface under a clear coating. - The menu page must load in under 2 seconds on a mobile device over cellular data. - QR menus must be accessible to users with disabilities: - QR menus can detect the device language and display the menu in the diner's preferred language automatically. ## Why QR Menus Persist Beyond hygiene, QR menus eliminate printing costs ($500-2,000/year for a typical restaurant), allow instant menu updates (86'd items, daily specials, seasonal changes), and enable analytics on which items customers view most. The key challenge is user experience — a poorly implemented QR menu frustrates diners more than a printed one. ## Physical Placement Place QR codes where diners naturally look: table tents, table stickers near the edge, or embedded in the table surface under a clear coating. The code should be at arm's length (30-50 cm scanning distance), requiring a minimum code size of 3×3 cm. Include brief text: 'Scan for Menu' — not everyone recognizes QR codes on sight. ## Landing Page Optimization The menu page must load in under 2 seconds on a mobile device over cellular data. Common mistakes that slow loading: - High-resolution food photography (compress to WebP, max 200 KB per image) - PDF menus requiring download (use a mobile-optimized web page instead) - Third-party widget scripts that block rendering The page should be a responsive HTML page, not a PDF. PDFs require pinch-to-zoom on mobile and cannot be updated without regenerating the entire file. ## Accessibility Requirements QR menus must be accessible to users with disabilities: - Provide a physical menu alternative on request (legally required in many jurisdictions) - Ensure the web menu works with screen readers (semantic HTML, proper heading hierarchy) - Use sufficient font size (minimum 16px body text) and contrast ratios - Avoid horizontal scrolling on any screen width ## Multilingual Menus QR menus can detect the device language and display the menu in the diner's preferred language automatically. This is a significant advantage for restaurants in tourist areas — a single QR code can serve menus in 5-10 languages without printing multilingual physical menus. … ### Building an Automated Image Pipeline for E-Commerce E-commerce sites need product images in multiple sizes, formats, and optimizations. Learn how to build an automated pipeline from upload to CDN delivery. - URL: https://peasytools.com/guides/automated-image-pipeline-ecommerce/ - Category: How-To - Reading time: 1 min - Words: 285 ## The E-Commerce Image Challenge A typical product listing needs 5-8 image variants: thumbnail (100x100), card (400x300), detail (800x800), zoom (1600x1600), and each in both WebP and JPEG. Multiply by thousands of products, and manual processing becomes impossible. ### Pipeline Architecture The pipeline processes images through sequential steps: 1) Validate (check format, dimensions, file size), 2) Normalize (convert to a consistent color profile, typically sRGB), 3) Resize (generate all required dimensions), 4) Optimize (compress per format with quality targets), 5) Convert (generate WebP and AVIF variants), 6) Upload (push to CDN with proper cache headers). ### Quality Settings by Use Case Thumbnails: JPEG quality 70, WebP quality 72. These are small and viewed briefly — aggressive compression is acceptable. Card images: JPEG quality 78, WebP quality 80. Detail views: JPEG quality 85, WebP quality 82. Zoom views: JPEG quality 90, WebP quality 88. Higher quality for larger views where users scrutinize the image. ### Responsive Image Delivery Use the `<picture>` element to serve the optimal format and size: ```html <picture> <source type="image/avif" srcset="product-400.avif 400w, product-800.avif 800w"> <source type="image/webp" srcset="product-400.webp 400w, product-800.webp 800w"> <img src="product-800.jpg" srcset="product-400.jpg 400w, product-800.jpg 800w" sizes="(max-width: 600px) 100vw, 50vw" alt="Product name" loading="lazy"> </picture> ``` ### Background Removal Many e-commerce sites require white or transparent backgrounds. Automated background removal using AI has become reliable for product photography on solid backgrounds. Run background removal as a pipeline step before resizing. Review results with a QA process — AI occasionally clips product edges or leaves artifacts. ### Performance Metrics Measure your pipeline's impact: track page load time, Largest Contentful Paint (LCP), total page weight, and conversion rate. A well-optimized image pipeline typically reduces page weight by 40-60% compared to unoptimized images, directly improving conversion rates. ### Lossless vs Lossy Audio: When Quality Matters and When It Doesn't The lossless vs. lossy debate generates more heat than light. In controlled double-blind tests, most listeners cannot distinguish 256 kbps AAC from lossless — but there are legitimate scenarios where lossless is essential. - URL: https://peasytools.com/guides/lossless-vs-lossy-audio-guide/ - Category: Comparison - Reading time: 2 min - Words: 326 Key takeaways: - Lossy audio codecs exploit psychoacoustic masking — the phenomenon where loud sounds make nearby quieter sounds inaudible. - Every lossy encoding cycle degrades quality. - Listening through earbuds on a subway, car speakers, laptop speakers, or Bluetooth headphones — environmental noise and hardware limitations mask any difference between 256 kbps AAC and lossless. - Keep a lossless archive (FLAC) of everything you create or own. - ### Critical Listening Environments In acoustically treated rooms with high-end headphones or monitors, trained listeners can sometimes detect lossy compression artifacts — pre-echo on transients, smearing in the stereo image, and loss of 'air' in high frequencies. ## What Lossy Compression Removes Lossy audio codecs exploit psychoacoustic masking — the phenomenon where loud sounds make nearby quieter sounds inaudible. A 1 kHz tone at 80 dB masks nearby frequencies at 60 dB. The codec identifies and discards these masked components, reducing file size while preserving perceived quality. ## When Lossless Matters ### Production and Mastering Every lossy encoding cycle degrades quality. If you encode to MP3, edit the MP3, then encode again, each generation loses additional data. Production workflows must use lossless (WAV, FLAC, AIFF) as the working format. Only encode to lossy as the final delivery step. ### Archival Archives should preserve maximum quality for future use. Lossy compression is irreversible — you cannot recover discarded data. A FLAC archive can be transcoded to any future format without generational loss. ### Critical Listening Environments In acoustically treated rooms with high-end headphones or monitors, trained listeners can sometimes detect lossy compression artifacts — pre-echo on transients, smearing in the stereo image, and loss of 'air' in high frequencies. These differences are subtle and disappear in normal listening conditions. ## When Lossy Is Sufficient ### Casual Listening Listening through earbuds on a subway, car speakers, laptop speakers, or Bluetooth headphones — environmental noise and hardware limitations mask any difference between 256 kbps AAC and lossless. ### Streaming and Mobile Bandwidth and storage are limited. A 4-minute FLAC track is 25 MB; the same in AAC 256 is 8 MB. Over a library of 1,000 songs, that is 25 GB vs. 8 GB. ### Podcasts and Voice Human speech has a narrower frequency range and less dynamic complexity than music. Podcasts at 128 kbps AAC mono are indistinguishable from lossless. ## The Practical Recommendation Keep a lossless archive (FLAC) of everything you create or own. Distribute in lossy formats … ### Password Strength Analysis: How Strong Is Your Password Really? Learn the science behind password strength meters and entropy calculations. Understand what makes a password truly secure, how attackers crack weak passwords, and practical strategies for creating memorable yet unbreakable credentials. - URL: https://peasytools.com/guides/password-strength-analysis-guide/ - Category: How-To - Reading time: 1 min - Words: 287 Key takeaways: - Password strength is measured in bits of entropy — the mathematical randomness that determines how long a brute-force attack would take. - Attackers rarely rely on pure brute force. - The most effective approach combines length with randomness. - Most online strength meters check only basic criteria — length, character variety, and common patterns. - A four-word passphrase like `correct-horse-battery-staple` provides roughly 44 bits of entropy from a standard dictionary — adequate for low-value accounts but insufficient for critical ones. ## Understanding Password Entropy Password strength is measured in bits of entropy — the mathematical randomness that determines how long a brute-force attack would take. A password with 40 bits of entropy can be cracked in hours, while 80+ bits would take centuries with current hardware. Entropy depends on both the character set and the password length. | Character Set | Pool Size | Entropy/Char | | --- | --- | --- | | Lowercase only | 26 | 4.7 bits | | Mixed case | 52 | 5.7 bits | | Mixed + digits | 62 | 5.9 bits | | All printable ASCII | 95 | 6.6 bits | ## Common Attack Methods Attackers rarely rely on pure brute force. Dictionary attacks test common words and phrases first. Rule-based attacks apply transformations like appending numbers or substituting letters (e.g., `p@ssw0rd`). Rainbow table attacks use precomputed hashes for known passwords. Modern GPUs can test billions of hashes per second against weak algorithms like MD5. ## Building Strong Passwords The most effective approach combines length with randomness. A four-word passphrase like `correct-horse-battery-staple` provides roughly 44 bits of entropy from a standard dictionary — adequate for low-value accounts but insufficient for critical ones. Adding mixed case, symbols, and a fifth word pushes entropy above 80 bits. Password managers eliminate the need to memorize complex strings entirely. ## What Password Meters Miss Most online strength meters check only basic criteria — length, character variety, and common patterns. They cannot detect whether your password appears in leaked databases or matches personal information an attacker might know. Use the Peasy password strength analyzer for entropy-based scoring that goes beyond simple rule checks, and always verify your password against known breach databases. ### Audio Bitrate and Quality: Finding the Right Balance Bitrate determines both file size and audio quality in lossy formats. Understanding the relationship between bitrate, codec efficiency, and perceptual quality helps you choose the optimal setting for each use case. - URL: https://peasytools.com/guides/audio-bitrate-quality-guide/ - Category: Best Practice - Reading time: 2 min - Words: 315 Key takeaways: - Bitrate measures the amount of data used to represent one second of audio, expressed in kilobits per second (kbps). - Every second of audio uses the same number of bits. - 'Transparent' means indistinguishable from the lossless source in double-blind testing. - At equivalent bitrates, modern codecs significantly outperform older ones: - Music streaming:** AAC 256 kbps or Opus 128 kbps ## What Bitrate Means Bitrate measures the amount of data used to represent one second of audio, expressed in kilobits per second (kbps). Higher bitrate means more data per second, which generally means higher quality — but codec efficiency determines how much quality a codec extracts from each kilobit. ## Constant vs. Variable Bitrate ### CBR (Constant Bitrate) Every second of audio uses the same number of bits. Simple passages waste bits; complex passages may be under-allocated. Predictable file size but suboptimal quality distribution. ### VBR (Variable Bitrate) The encoder allocates more bits to complex passages (dense orchestral, cymbals) and fewer to simple passages (silence, sustained notes). VBR produces better quality at a given average bitrate but results in slightly unpredictable file sizes. **Recommendation:** Always use VBR for quality-critical applications. ## Quality Thresholds by Format | Format | Transparent Threshold | Good Enough | Minimum Acceptable | |--------|---------------------|-------------|-------------------| | MP3 (LAME V0) | ~245 kbps VBR | 192 kbps | 128 kbps | | AAC (Apple/FDK) | ~192 kbps VBR | 128 kbps | 96 kbps | | OGG Vorbis | ~192 kbps VBR | 128 kbps | 96 kbps | | Opus | ~128 kbps VBR | 96 kbps | 64 kbps | 'Transparent' means indistinguishable from the lossless source in double-blind testing. ## Codec Efficiency Rankings At equivalent bitrates, modern codecs significantly outperform older ones: 1. **Opus** — Best overall efficiency (especially below 128 kbps) 2. **AAC (Apple/FDK)** — Best for music distribution 3. **OGG Vorbis** — Excellent open-source alternative 4. **MP3 (LAME)** — Oldest, least efficient, but most compatible ## Practical Guidelines - **Music streaming:** AAC 256 kbps or Opus 128 kbps - **Podcasts:** AAC 128 kbps mono or Opus 64 kbps mono - **Voice calls:** Opus 32-64 kbps (designed for speech) - **Background music (web):** AAC … ### Image Format Comparison: JPEG, PNG, WebP, AVIF, and SVG Comprehensive comparison of image formats for the web. Understand compression algorithms, transparency support, animation capabilities, and browser compatibility to choose the right format for every use case. - URL: https://peasytools.com/guides/image-format-comparison-jpeg-png-webp-avif-svg/ - Category: Comparison - Reading time: 1 min - Words: 291 Key takeaways: - Web image formats have evolved dramatically from the JPEG/GIF/PNG era. - JPEG: Photographs where transparency is not needed and universal support is required. - Serve modern formats with fallbacks using the HTML `<picture>` element. - SVG: Logos, icons, illustrations, and any graphic that must scale to arbitrary sizes. ## The Format Landscape Web image formats have evolved dramatically from the JPEG/GIF/PNG era. Modern formats offer 25-50% better compression, but browser support varies. Choosing the right format requires balancing quality, file size, features, and compatibility. ## Detailed Comparison | Format | Compression | Transparency | Animation | Browser Support | | --- | --- | --- | --- | --- | | JPEG | Lossy | No | No | Universal | | PNG | Lossless | Yes (alpha) | No (APNG: partial) | Universal | | WebP | Both | Yes | Yes | 97%+ | | AVIF | Both | Yes | Yes | 92%+ | | SVG | N/A (vector) | Yes | Yes (CSS/SMIL) | Universal | | JPEG XL | Both | Yes | Yes | Chrome flag only | ## When to Use Each Format **JPEG**: Photographs where transparency is not needed and universal support is required. Quality 75-85 offers the best size/quality tradeoff. **PNG**: Screenshots, diagrams, and images with text or sharp edges where lossy artifacts are unacceptable. Use PNG-8 for simple graphics with limited colors. **WebP**: The default recommendation for most web images. Lossy WebP matches JPEG quality at 25-35% smaller file sizes. Lossless WebP is 26% smaller than PNG. **AVIF**: Best compression available but slower to encode. Ideal for hero images and key visuals where encoding time is acceptable and maximum savings matter. **SVG**: Logos, icons, illustrations, and any graphic that must scale to arbitrary sizes. Typically the smallest format for simple graphics and infinitely scalable. ## The `<picture>` Element Strategy Serve modern formats with fallbacks using the HTML `<picture>` element. List AVIF first, then WebP, with JPEG or PNG as the final fallback. Browsers select the first supported format automatically. ### Two-Factor Authentication Methods Compared: TOTP, SMS, and Hardware Keys Compare the security, convenience, and cost of major 2FA methods including authenticator apps, SMS codes, hardware security keys, and biometrics. Find the right balance between protection and usability for your accounts. - URL: https://peasytools.com/guides/two-factor-authentication-methods-compared/ - Category: Comparison - Reading time: 1 min - Words: 289 Key takeaways: - Over 80% of data breaches involve compromised credentials. - SMS-based 2FA is the most widely supported method but also the weakest. - Time-based One-Time Password apps like Google Authenticator and Authy generate six-digit codes that rotate every 30 seconds. - FIDO2/WebAuthn hardware keys like YubiKey provide the strongest protection available. - The shared secret never leaves your device after initial setup, eliminating network interception risks. ## Why Passwords Alone Fail Over 80% of data breaches involve compromised credentials. Two-factor authentication adds a second verification layer that remains effective even when passwords are stolen. However, not all 2FA methods provide equal protection — the differences matter significantly for security-conscious users. ## Comparison of 2FA Methods | Method | Security | Convenience | Cost | Phishing Resistance | | --- | --- | --- | --- | --- | | SMS codes | Low | High | Free | None | | TOTP apps | Medium | Medium | Free | Low | | Push notifications | Medium | High | Free | Low | | Hardware keys (FIDO2) | Very high | Medium | $25-70 | Full | | Passkeys | High | High | Free | Full | ## SMS: Convenient but Vulnerable SMS-based 2FA is the most widely supported method but also the weakest. SIM-swap attacks allow criminals to port your phone number to their device. SS7 protocol vulnerabilities enable interception of text messages in transit. Despite these risks, SMS 2FA is still dramatically better than no second factor at all. ## TOTP Authenticator Apps Time-based One-Time Password apps like Google Authenticator and Authy generate six-digit codes that rotate every 30 seconds. The shared secret never leaves your device after initial setup, eliminating network interception risks. However, TOTP codes can still be captured by sophisticated phishing sites that relay them in real time. ## Hardware Security Keys FIDO2/WebAuthn hardware keys like YubiKey provide the strongest protection available. They use public-key cryptography bound to the specific website origin, making phishing mathematically impossible. The key signs a challenge that includes the site URL — a fake site produces a different challenge that the key rejects. ### Document Format Interoperability: PDF, DOCX, ODT, and Markdown Navigate the complexities of converting between document formats. Understand what survives conversion, what gets lost, and best practices for maintaining fidelity across PDF, DOCX, ODT, and Markdown. - URL: https://peasytools.com/guides/document-format-interoperability-guide/ - Category: Comparison - Reading time: 1 min - Words: 290 Key takeaways: - Every document format makes different assumptions about content structure. - Text content survives most conversions. - PDF → anything**: Column layouts, text flow, headers/footers break - Write in the most structured format possible and convert to presentation formats at the end. ## The Interoperability Challenge Every document format makes different assumptions about content structure. PDF preserves exact visual layout but loses semantic structure. DOCX encodes rich formatting in XML but ties you to Microsoft's ecosystem. Markdown captures structure cleanly but cannot express complex layouts. Understanding these tradeoffs helps you choose source and target formats wisely. ## Format Characteristics | Feature | PDF | DOCX | ODT | Markdown | | --- | --- | --- | --- | --- | | Layout fidelity | Exact | High | High | None | | Semantic structure | Low | High | High | Very high | | Editability | Low | High | High | Very high | | File size | Medium | Medium | Medium | Very small | | Version control | Poor | Poor | Poor | Excellent | | Accessibility | Variable | Good | Good | Excellent | ## What Survives Conversion Text content survives most conversions. Headings, lists, and basic formatting (bold, italic) transfer reliably between DOCX, ODT, and Markdown. Tables work across DOCX and ODT but simplify when converting to Markdown. Images embed correctly in most directions but may lose resolution or positioning. ## What Gets Lost - **PDF → anything**: Column layouts, text flow, headers/footers break - **DOCX → Markdown**: Track changes, comments, footnotes, complex tables - **Markdown → PDF**: Custom page sizes, page numbers, print-specific layout - **Any → PDF**: Editability (PDF is effectively a snapshot) ## Best Practices Write in the most structured format possible and convert to presentation formats at the end. Markdown to PDF is far more reliable than PDF to Markdown. Convert documents with Peasy's client-side format converters for instant results without uploading sensitive content to any server. ### Encryption Algorithms Compared: AES, ChaCha20, and RSA Explained Understand the differences between symmetric and asymmetric encryption, when to use AES-256 vs ChaCha20-Poly1305, and how RSA fits into modern cryptographic systems. A practical guide for non-cryptographers making security decisions. - URL: https://peasytools.com/guides/encryption-algorithms-compared-aes-chacha20-rsa/ - Category: Comparison - Reading time: 1 min - Words: 294 Key takeaways: - Symmetric encryption uses the same key for encryption and decryption — fast but requires secure key exchange. - The Advanced Encryption Standard with 256-bit keys is the most widely deployed symmetric cipher. - Designed by Daniel Bernstein, ChaCha20 is a stream cipher paired with the Poly1305 authenticator. - RSA remains widely used for digital signatures and key exchange, though newer elliptic curve algorithms (ECDH, Ed25519) provide equivalent security with smaller keys. ## Symmetric vs Asymmetric Encryption Symmetric encryption uses the same key for encryption and decryption — fast but requires secure key exchange. Asymmetric encryption uses a public/private key pair — slower but solves the key distribution problem. Modern systems combine both: asymmetric encryption exchanges a symmetric session key, then symmetric encryption handles the bulk data transfer. ## AES-256: The Industry Standard The Advanced Encryption Standard with 256-bit keys is the most widely deployed symmetric cipher. It operates on 128-bit blocks and uses 14 rounds of substitution and permutation. AES-GCM mode provides both encryption and authentication in a single operation. Hardware acceleration (AES-NI instructions) makes it extremely fast on modern processors — often exceeding 10 GB/s. ## ChaCha20-Poly1305: The Mobile-Friendly Alternative Designed by Daniel Bernstein, ChaCha20 is a stream cipher paired with the Poly1305 authenticator. It performs exceptionally well on devices without AES hardware acceleration — particularly older smartphones and IoT devices. ChaCha20 is also resistant to timing attacks by design, whereas some AES implementations require careful countermeasures. | Feature | AES-256-GCM | ChaCha20-Poly1305 | | --- | --- | --- | | Type | Block cipher | Stream cipher | | Key size | 256 bits | 256 bits | | Speed (hardware) | Very fast | Fast | | Speed (software) | Medium | Very fast | | Nonce size | 96 bits | 96 bits | ## RSA and Modern Key Exchange RSA remains widely used for digital signatures and key exchange, though newer elliptic curve algorithms (ECDH, Ed25519) provide equivalent security with smaller keys. A 256-bit elliptic curve key offers comparable strength to a 3072-bit RSA key. For file encryption tools, the choice of symmetric cipher matters most — use AES-GCM when hardware acceleration is available, or ChaCha20-Poly1305 for universal compatibility. ### Audio Format Guide: MP3, AAC, FLAC, WAV, and OGG Explained Understand the differences between lossy and lossless audio formats. Learn when to use each format for music, podcasts, sound effects, and professional audio production. - URL: https://peasytools.com/guides/audio-format-guide-mp3-aac-flac-wav-ogg/ - Category: How-To - Reading time: 1 min - Words: 292 Key takeaways: - Lossy codecs (MP3, AAC, OGG Vorbis) remove audio data that psychoacoustic models predict humans cannot perceive. - MP3: Maximum compatibility — email attachments, legacy devices, podcast distribution. - Never convert between lossy formats — each re-encoding compounds quality loss. - Lossless codecs (FLAC, ALAC, WAV) preserve every sample exactly — important for production and archiving but resulting in much larger files. - ## Conversion Best Practices Never convert between lossy formats — each re-encoding compounds quality loss. ## Lossy vs Lossless Audio Lossy codecs (MP3, AAC, OGG Vorbis) remove audio data that psychoacoustic models predict humans cannot perceive. This typically achieves 5-10x compression. Lossless codecs (FLAC, ALAC, WAV) preserve every sample exactly — important for production and archiving but resulting in much larger files. ## Format Comparison | Format | Type | Typical Bitrate | File Size (4 min) | Browser Support | | --- | --- | --- | --- | --- | | MP3 | Lossy | 128-320 kbps | 4-10 MB | Universal | | AAC | Lossy | 96-256 kbps | 3-8 MB | Universal | | OGG Vorbis | Lossy | 96-320 kbps | 3-10 MB | Firefox, Chrome | | Opus | Lossy | 32-256 kbps | 1-8 MB | Modern browsers | | FLAC | Lossless | 800-1200 kbps | 25-40 MB | Chrome, Firefox, Edge | | WAV | Uncompressed | 1411 kbps | 42 MB | Universal | ## When to Use Each **MP3**: Maximum compatibility — email attachments, legacy devices, podcast distribution. Use 192 kbps or higher for music. **AAC**: Superior quality to MP3 at the same bitrate. Default for Apple devices and streaming platforms. Use for web audio where older browser support is needed. **Opus**: The best lossy codec available. Excellent at low bitrates (48-96 kbps) for voice, competitive at higher rates for music. Ideal for WebRTC and streaming. **FLAC**: Lossless archiving and audiophile playback. Compresses WAV to roughly 60% of original size without any quality loss. ## Conversion Best Practices Never convert between lossy formats — each re-encoding compounds quality loss. Always keep lossless originals and create lossy versions as needed. Convert audio files with Peasy's browser-based converter to avoid uploading sensitive audio recordings to external services. ### Regex Cheat Sheet: Essential Patterns for Text Processing A practical regular expression reference covering the most commonly needed patterns for text processing. Includes email validation, URL matching, date parsing, and number formatting patterns with explanations. - URL: https://peasytools.com/guides/regex-cheat-sheet-essential-patterns/ - Category: How-To - Reading time: 1 min - Words: 243 Key takeaways: - Regular expressions describe text patterns using a concise syntax. - `*?`, `+?` — Non-greedy versions - Catastrophic backtracking: Patterns like `(a+)+b` can take exponential time on inputs like `aaaaaaaaaaac`. - ## Essential Patterns | Pattern | Matches | Example | | --- | --- | --- | | `\d{1,3}\. ## Regex Basics Regular expressions describe text patterns using a concise syntax. They power search-and-replace in editors, input validation in forms, and text extraction in data pipelines. Mastering a handful of core patterns covers 90% of real-world regex needs. ## Essential Patterns | Pattern | Matches | Example | | --- | --- | --- | | `\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}` | IPv4 address (loose) | `192.168.1.1` | | `[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}` | Email (simple) | `user@example.com` | | `https?://[^\s]+` | URL (simple) | `https://example.com/page` | | `\d{4}-\d{2}-\d{2}` | ISO date | `2026-03-10` | | `#[0-9a-fA-F]{3,8}` | Hex color | `#FF6B35` | | `\b\w+\b` | Word boundary | Individual words | ## Quantifiers and Groups - `*` — Zero or more (greedy) - `+` — One or more (greedy) - `?` — Zero or one (optional) - `*?`, `+?` — Non-greedy versions - `{n,m}` — Between n and m repetitions - `(abc)` — Capture group - `(?:abc)` — Non-capturing group - `(?=abc)` — Lookahead (matches position before abc) - `(?<=abc)` — Lookbehind (matches position after abc) ## Common Mistakes **Catastrophic backtracking**: Patterns like `(a+)+b` can take exponential time on inputs like `aaaaaaaaaaac`. Avoid nested quantifiers on the same characters. **Greedy matching**: `<.*>` matches from the first `<` to the last `>` on a line, not individual tags. Use `<.*?>` (non-greedy) or `<[^>]*>` (character class). Test and refine your regex patterns with the Peasy regex tester — real-time matching with step-by-step explanation of how the engine processes each pattern. ### CSS Grid vs Flexbox: When to Use Each Layout System End the Grid vs Flexbox debate with clear guidelines. Understand the conceptual differences, when each layout system excels, and how to combine them effectively for complex layouts. - URL: https://peasytools.com/guides/css-grid-vs-flexbox-when-to-use-each/ - Category: Comparison - Reading time: 1 min - Words: 276 Key takeaways: - Flexbox is a one-dimensional layout system — it arranges items along a single axis (row or column). - Navigation bars (items in a row) - Page-level layouts (header, sidebar, main, footer) - The most effective approach uses Grid for the overall page layout and Flexbox for component-level arrangement within grid cells. ## The Fundamental Difference Flexbox is a one-dimensional layout system — it arranges items along a single axis (row or column). Grid is a two-dimensional layout system — it controls both rows and columns simultaneously. This is not a matter of capability overlap; they solve fundamentally different layout problems. ## When to Use Flexbox - Navigation bars (items in a row) - Card footers (push content to bottom) - Centering content (both axes) - Distributing space between items - Wrapping items to the next line - Any layout that flows in one direction ## When to Use Grid - Page-level layouts (header, sidebar, main, footer) - Image galleries with consistent sizing - Form layouts (labels aligned with inputs) - Any layout requiring precise row AND column control - Overlapping elements (grid areas can overlap) ## Comparison Table | Feature | Flexbox | Grid | | --- | --- | --- | | Dimensions | 1D (row or column) | 2D (rows and columns) | | Content-driven | Yes (items size to content) | Optional (can be track-driven) | | Gap property | Yes | Yes | | Item overlap | No | Yes (grid areas) | | Named areas | No | Yes (`grid-template-areas`) | | Implicit tracks | N/A | Yes (auto-generated rows/columns) | ## Combining Both The most effective approach uses Grid for the overall page layout and Flexbox for component-level arrangement within grid cells. A grid cell containing a card can use flexbox internally to align its content. These systems are complementary, not competing. Experiment with Grid and Flexbox layouts using the Peasy CSS layout generator — visual builder with instant code output. ### Text Encoding Explained: UTF-8, ASCII, Latin-1, and Unicode Demystify character encoding — why text appears as garbled symbols, how UTF-8 became the universal standard, and practical strategies for handling encoding issues in your workflow. - URL: https://peasytools.com/guides/text-encoding-utf8-ascii-unicode-explained/ - Category: How-To - Reading time: 1 min - Words: 261 Key takeaways: - Every text file is a sequence of bytes. - UTF-8 uses variable-length encoding: ASCII characters (U+0000 to U+007F) use one byte, identical to ASCII. - Double encoding**: UTF-8 bytes interpreted as Latin-1, then re-encoded to UTF-8 → `café` (two bytes for é become four) - Use UTF-8 everywhere — source files, databases, APIs, and file storage. ## Why Encoding Matters Every text file is a sequence of bytes. Character encoding defines the mapping between bytes and characters. When the wrong encoding is assumed, text appears as garbled symbols (mojibake) — `café` becomes `café` when UTF-8 is decoded as Latin-1. Understanding encoding prevents data corruption. ## The Encoding Timeline | Era | Encoding | Characters | Bytes/Char | | --- | --- | --- | --- | | 1960s | ASCII | 128 | 1 | | 1980s | Latin-1 (ISO 8859-1) | 256 | 1 | | 1990s | Windows-1252 | 256 (extended) | 1 | | 2000s | UTF-8 | 1,114,112 (all Unicode) | 1-4 | | Current | UTF-8 dominates (>98% of web) | — | — | ## How UTF-8 Works UTF-8 uses variable-length encoding: ASCII characters (U+0000 to U+007F) use one byte, identical to ASCII. Latin characters use two bytes. CJK characters and emoji use three to four bytes. This backward compatibility with ASCII is why UTF-8 won — existing ASCII text is valid UTF-8 without modification. ## Common Encoding Problems - **Double encoding**: UTF-8 bytes interpreted as Latin-1, then re-encoded to UTF-8 → `café` (two bytes for é become four) - **BOM insertion**: Some tools prepend a Byte Order Mark (EF BB BF) that other tools do not expect - **Database charset mismatch**: Connection charset differs from table charset ## Best Practice Use UTF-8 everywhere — source files, databases, APIs, and file storage. Specify encoding explicitly (`charset=utf-8`) rather than relying on platform defaults. Detect and convert encodings with the Peasy encoding tools. ### CSS Custom Properties (Variables): A Complete Guide Master CSS custom properties — from basic variable usage to advanced patterns like theming, component APIs, and responsive design tokens. Understand how they differ from preprocessor variables and when to use each. - URL: https://peasytools.com/guides/css-custom-properties-variables-complete-guide/ - Category: How-To - Reading time: 1 min - Words: 204 Key takeaways: - CSS custom properties (declared with `--`) are fundamentally different from Sass/Less variables. - background: var(--color-primary); - Define theme tokens as custom properties and swap them for different themes: - Custom properties create clean component interfaces. - Custom properties trigger style recalculation when changed. ## Custom Properties vs Preprocessor Variables CSS custom properties (declared with `--`) are fundamentally different from Sass/Less variables. Custom properties exist at runtime — they cascade, inherit, and can be changed dynamically with JavaScript. Preprocessor variables are compile-time constants that disappear in the output CSS. ## Basic Usage ```css :root { --color-primary: #3b82f6; --spacing-md: 1rem; --radius-lg: 0.75rem; } .button { background: var(--color-primary); padding: var(--spacing-md); border-radius: var(--radius-lg); } ``` ## Theming with Custom Properties Define theme tokens as custom properties and swap them for different themes: ```css :root { --bg: #ffffff; --text: #1a1a1a; } .dark { --bg: #1a1a1a; --text: #ffffff; } ``` Every element using `var(--bg)` automatically updates when the `.dark` class is toggled — no JavaScript per-element manipulation needed. ## Component APIs Custom properties create clean component interfaces. The component defines defaults, and consumers override only what they need: ```css .card { padding: var(--card-padding, 1.5rem); background: var(--card-bg, white); } ``` ## Performance Considerations Custom properties trigger style recalculation when changed. Avoid changing properties on `:root` during animations — scope them to the animated element to limit the recalculation scope. For static design tokens, preprocessor variables perform slightly better since they compile away. Generate and preview CSS custom property themes with the Peasy CSS tools. ### Advanced Markdown: Tables, Footnotes, Task Lists, and Extensions Go beyond basic Markdown with advanced features supported by major platforms. Covers GFM tables, footnotes, task lists, math notation, Mermaid diagrams, and the differences between Markdown flavors. - URL: https://peasytools.com/guides/advanced-markdown-tables-footnotes-extensions/ - Category: How-To - Reading time: 1 min - Words: 223 Key takeaways: - Basic Markdown covers headings, bold, italic, links, and images. - GFM (GitHub Flavored Markdown) tables use pipes and dashes. - Supported by GFM, Obsidian, and most static site generators: - Interactive checkboxes render on GitHub and GitLab: - GitHub, GitLab, Notion, and Obsidian render Mermaid diagrams directly in Markdown. ## Beyond Basic Markdown Basic Markdown covers headings, bold, italic, links, and images. But modern Markdown platforms support rich features that many users never discover. These extensions can replace dedicated diagramming tools, project trackers, and math editors for many common tasks. ## Tables GFM (GitHub Flavored Markdown) tables use pipes and dashes. Column alignment is controlled by colons in the separator row: left (`:---`), center (`:---:`), right (`---:`). Cells cannot span multiple rows or columns — for complex tables, use HTML within Markdown. ## Footnotes Supported by GFM, Obsidian, and most static site generators: ``` This claim needs citation[^1]. [^1]: Source: Nature, 2024, Vol 615. ``` ## Task Lists Interactive checkboxes render on GitHub and GitLab: ``` - [x] Completed item - [ ] Pending item - [ ] Another pending item ``` ## Mermaid Diagrams GitHub, GitLab, Notion, and Obsidian render Mermaid diagrams directly in Markdown. Create flowcharts, sequence diagrams, Gantt charts, and entity-relationship diagrams without external tools. ## Math Notation LaTeX math expressions render on GitHub, GitLab, and Jupyter. Inline math uses `$E = mc^2$`, display math uses `$$` delimiters. This enables technical documentation with proper mathematical notation. ## Flavor Differences CommonMark is the standardization effort, but GitHub, GitLab, Obsidian, and Pandoc each extend it differently. Always check your target platform's documentation. Format and preview Markdown with the Peasy Markdown editor. ### CSS Animation Performance: What the Browser Actually Does Understand the browser rendering pipeline and which CSS properties can be animated efficiently. Learn why some animations are silky smooth while others cause jank, and how to fix performance problems. - URL: https://peasytools.com/guides/css-animation-performance-browser-guide/ - Category: Best Practice - Reading time: 1 min - Words: 271 Key takeaways: - When CSS changes, the browser performs up to four steps: Style calculation → Layout → Paint → Composite. - Animate only `transform` and `opacity` whenever possible. - Movement**: `left/top` → `transform: translate()` - Chrome DevTools Performance panel shows frame timing and identifies jank. - The `will-change` property hints to the browser that an element will be animated, allowing it to optimize in advance. ## The Rendering Pipeline When CSS changes, the browser performs up to four steps: Style calculation → Layout → Paint → Composite. Each step is progressively more expensive. The key to smooth 60fps animation is triggering only compositing — the cheapest step. ## Property Cost Tiers | Tier | Properties | Pipeline Steps | Performance | | --- | --- | --- | --- | | Composite only | `transform`, `opacity` | Composite | Excellent (GPU) | | Paint + Composite | `color`, `background`, `box-shadow` | Paint → Composite | Good | | Layout + Paint | `width`, `height`, `margin`, `padding` | Layout → Paint → Comp | Poor | | Full pipeline | `font-size`, `display` | Style → Layout → Paint → Comp | Very poor | ## The Golden Rule Animate only `transform` and `opacity` whenever possible. These properties run on the GPU compositor thread, independent of the main thread. Even if JavaScript is busy, compositor animations remain smooth. ## Common Performance Fixes - **Movement**: `left/top` → `transform: translate()` - **Sizing**: `width/height` → `transform: scale()` - **Visibility**: `display/visibility` → `opacity` with `pointer-events` - **Color transitions**: Acceptable but ensure `will-change` hint ## Debugging Animation Performance Chrome DevTools Performance panel shows frame timing and identifies jank. The Rendering tab highlights paint regions and layer borders. Enable 'FPS meter' for real-time frame rate monitoring during animation development. ## will-change Property The `will-change` property hints to the browser that an element will be animated, allowing it to optimize in advance. Use sparingly — applying it to too many elements wastes GPU memory. Set it just before animation starts and remove it after completion. ### Lorem Ipsum and Placeholder Text: When and How to Use It Placeholder text fills layouts during design before real content arrives. This guide covers the history of Lorem Ipsum, when to use it, and better alternatives for different contexts. - URL: https://peasytools.com/guides/lorem-ipsum-placeholder-text-guide/ - Category: How-To - Reading time: 1 min - Words: 295 Key takeaways: - Lorem Ipsum is scrambled Latin derived from Cicero's 'De Finibus Bonorum et Malorum' (45 BC). - For a medical site, use placeholder text about health topics. - Paragraph count**: Generate 1-50 paragraphs - Many designers now advocate for content-first design, where real content shapes the design rather than the other way around. ## What Is Lorem Ipsum Lorem Ipsum is scrambled Latin derived from Cicero's 'De Finibus Bonorum et Malorum' (45 BC). It has been the printing industry's standard placeholder text since the 1500s. Its letter distribution roughly mimics English, making layouts look realistic. ## When to Use Placeholder Text | Scenario | Use Placeholder? | Why | |----------|-----------------|-----| | Wireframing | Yes | Focus on structure, not content | | Client presentations | Sometimes | Real content is better if available | | Development testing | Yes | Need text to test layouts | | Production deployment | Never | Replace before launch | ## Alternatives to Lorem Ipsum ### Topic-Relevant Placeholder For a medical site, use placeholder text about health topics. For a legal site, use legal-sounding text. This helps stakeholders visualize the final product more accurately. ### Real Draft Content The best placeholder is actual draft content. Even rough drafts reveal layout issues that Lorem Ipsum hides — overly long titles, insufficient paragraph variety, and missing images. ### Different Languages If your site supports multiple languages, test layouts with text in each target language. German words are 30% longer than English on average; Chinese characters are much more compact. These differences affect layouts significantly. ## Generator Features to Look For - **Paragraph count**: Generate 1-50 paragraphs - **Word count**: Fixed or variable-length output - **HTML output**: Wrapped in `<p>` tags for direct paste into HTML - **Lists and headings**: Generate structured content, not just paragraphs - **Character set**: Support for different scripts and languages ## The 'Content-First' Movement Many designers now advocate for content-first design, where real content shapes the design rather than the other way around. When real content is available early in the process, layouts naturally accommodate actual content lengths and structures. ### Color Palette Generation Techniques for Web Design Building a cohesive color palette is the foundation of every design project. This guide covers algorithmic and artistic approaches to generating palettes that work across interfaces, illustrations, and brand assets. - URL: https://peasytools.com/guides/color-palette-generation-techniques/ - Category: How-To - Reading time: 2 min - Words: 305 Key takeaways: - A well-chosen palette creates visual harmony, guides user attention, and reinforces brand identity. - Select a base hue and pick the color directly opposite on the color wheel (180 degrees apart). - HSL (Hue, Saturation, Lightness) is the most intuitive model for palette generation. - Extracting dominant colors from a photograph produces naturally harmonious palettes. - Always test palette accessibility with a contrast checker (WCAG AA requires at least 4.5:1 for text) ## Why Color Palettes Matter A well-chosen palette creates visual harmony, guides user attention, and reinforces brand identity. Random color picks lead to clashing interfaces and inconsistent experiences across pages. ## Algorithmic Approaches ### Complementary Colors Select a base hue and pick the color directly opposite on the color wheel (180 degrees apart). This produces high-contrast pairs ideal for call-to-action buttons against neutral backgrounds. ### Analogous Harmony Choose three to five colors adjacent on the wheel (within 30-60 degrees). The result feels cohesive and calm — perfect for editorial layouts and dashboards where you want subtle differentiation without visual noise. ### Triadic and Tetradic Schemes Triadic schemes use three colors evenly spaced at 120 degrees. Tetradic (rectangular) schemes use four colors forming two complementary pairs. Both offer rich variety but require careful saturation balancing to avoid overwhelming the viewer. ## Working in HSL Space HSL (Hue, Saturation, Lightness) is the most intuitive model for palette generation. Lock the hue and vary saturation and lightness to create tints and shades: | Variant | Saturation | Lightness | |---------|------------|----------| | Vivid | 80-100% | 45-55% | | Muted | 30-50% | 50-60% | | Pastel | 40-60% | 80-90% | | Dark | 60-80% | 20-35% | ## Palette Extraction from Images Extracting dominant colors from a photograph produces naturally harmonious palettes. The k-means clustering algorithm groups pixel values and returns the centroids as representative colors. Median-cut and octree quantization are faster alternatives that trade precision for speed. ## Practical Tips - Always test palette accessibility with a contrast checker (WCAG AA requires at least 4.5:1 for text) - Include a neutral gray scale alongside accent colors - Limit primary palette to five to seven colors and derive extended shades from those - Export palettes as CSS custom properties or design tokens … ### Video Codec Comparison: H.264 vs H.265 vs VP9 vs AV1 Four dominant video codecs compete for web delivery and streaming. Each balances compression efficiency, encoding speed, and browser support differently. This guide helps you choose the right codec. - URL: https://peasytools.com/guides/video-codec-comparison-h264-h265-vp9-av1/ - Category: Comparison - Reading time: 2 min - Words: 336 Key takeaways: - A codec (coder-decoder) compresses raw video into a manageable file size and decompresses it for playback. - Released in 2003, H.264 remains the most widely supported codec. - H.265 achieves roughly 50% better compression than H.264. - Google's royalty-free answer to H.265. - The newest codec, developed by the Alliance for Open Media. ## Understanding Video Codecs A codec (coder-decoder) compresses raw video into a manageable file size and decompresses it for playback. The codec determines quality-per-bit — better codecs produce smaller files at the same visual quality. ## H.264 (AVC) Released in 2003, H.264 remains the most widely supported codec. Every browser, device, and hardware decoder supports it. Encoding is fast and well-optimized after two decades of development. **Best for:** Maximum compatibility, real-time encoding, legacy device support. **Drawback:** 30-50% larger files than newer codecs at equivalent quality. ## H.265 (HEVC) H.265 achieves roughly 50% better compression than H.264. However, it carries licensing fees and limited browser support — only Safari and Edge support it natively. Chrome and Firefox do not. **Best for:** Apple ecosystem, 4K/HDR content, offline playback. **Drawback:** Patent licensing costs, poor browser support. ## VP9 Google's royalty-free answer to H.265. VP9 achieves similar compression to HEVC and is supported in Chrome, Firefox, and Edge. YouTube uses VP9 extensively for its streaming pipeline. **Best for:** Web delivery, YouTube, royalty-free workflows. **Drawback:** Slower encoding than H.264, no Safari support. ## AV1 The newest codec, developed by the Alliance for Open Media. AV1 achieves 30% better compression than VP9 and is royalty-free. Browser support is growing (Chrome, Firefox, Safari 17+). **Best for:** Future-proof delivery, maximum compression. **Drawback:** Very slow encoding (10-100x slower than H.264). Hardware encoders are still emerging. ## Comparison Table | Feature | H.264 | H.265 | VP9 | AV1 | |---------|-------|-------|-----|-----| | Compression | Baseline | +50% | +50% | +65% | | Browser support | 99%+ | Safari/Edge | 95%+ | ~90% | | Royalty-free | No* | No | Yes | Yes | | Encoding speed | Fast | Moderate | Slow | Very slow | | HDR support | Limited | Yes | Yes | Yes | … ### Meta Tags Optimization: A Complete Guide for 2025-2026 Meta tags are the first impression your page makes on search engines and social platforms. Optimizing title tags, descriptions, and other meta elements directly impacts click-through rates from SERPs. - URL: https://peasytools.com/guides/meta-tags-optimization-complete-guide/ - Category: How-To - Reading time: 1 min - Words: 276 Key takeaways: - The `<title>` element is the single most impactful on-page SEO factor. - Control how your pages appear when shared on Facebook, LinkedIn, and other platforms: - Twitter uses its own meta tags alongside Open Graph fallbacks: - Duplicate titles across multiple pages - ## The Most Important Meta Tags ### Title Tag The `<title>` element is the single most impactful on-page SEO factor. ## The Most Important Meta Tags ### Title Tag The `<title>` element is the single most impactful on-page SEO factor. It appears in browser tabs, search results, and social shares. | Rule | Guideline | |------|----------| | Length | 50-60 characters (Google truncates at ~580px) | | Primary keyword | Place near the beginning | | Brand name | Append with a separator (" — Brand") | | Uniqueness | Every page must have a distinct title | ### Meta Description Not a ranking factor, but heavily influences click-through rate. Write a compelling 150-160 character summary that includes the target keyword and a clear value proposition. Google rewrites descriptions about 62% of the time, but a well-written description increases the chance it is used as-is. ### Robots Meta Tag `<meta name="robots" content="index, follow">` is the default. Use `noindex` for pages you want crawled but not indexed (admin pages, thank-you pages, duplicate filtered views). ## Open Graph Tags Control how your pages appear when shared on Facebook, LinkedIn, and other platforms: - `og:title` — Share title (can differ from SEO title) - `og:description` — Share description - `og:image` — Preview image (minimum 1200×630px) - `og:type` — Content type (website, article) ## Twitter Card Tags Twitter uses its own meta tags alongside Open Graph fallbacks: - `twitter:card` — Card type (summary, summary_large_image) - `twitter:title` — Falls back to og:title - `twitter:description` — Falls back to og:description ## Common Mistakes - Duplicate titles across multiple pages - Missing or too-short meta descriptions - Using the same OG image for every page - Forgetting the viewport meta tag for mobile - Blocking CSS/JS with robots meta while expecting proper rendering ### Percentage Calculation Formulas and Real-World Applications Percentages appear everywhere: discounts, tax rates, growth metrics, and exam scores. This guide covers the three core formulas and common calculation mistakes. - URL: https://peasytools.com/guides/percentage-calculation-formulas/ - Category: How-To - Reading time: 2 min - Words: 306 Key takeaways: - Every percentage problem reduces to one of three questions: - If an interest rate rises from 5% to 7%, it increased by 2 percentage points but by 40% in relative terms: `((7 - 5) / 5) * 100 = 40%`. - Finding the original value before a percentage was applied is a reverse calculation. - Sales tax**: Total = Price * (1 + Tax Rate) ## The Three Core Formulas Every percentage problem reduces to one of three questions: ### 1. What is X% of Y? Formula: `Result = Y * (X / 100)` Example: What is 15% of 200? `200 * (15 / 100) = 200 * 0.15 = 30` ### 2. X is what percent of Y? Formula: `Percentage = (X / Y) * 100` Example: 45 is what percent of 180? `(45 / 180) * 100 = 25%` ### 3. Percentage change from X to Y Formula: `Change = ((Y - X) / X) * 100` Example: Sales grew from 800 to 1,000. `((1000 - 800) / 800) * 100 = 25% increase` ## Percentage Points vs Percentages If an interest rate rises from 5% to 7%, it increased by 2 percentage points but by 40% in relative terms: `((7 - 5) / 5) * 100 = 40%`. This distinction matters in finance and journalism. ## Common Mistakes | Mistake | Why It's Wrong | |---------|---------------| | Adding percentages of different bases | 10% of 100 + 10% of 200 is not 10% of 300 | | Reversing percentage changes | A 50% increase then 50% decrease does NOT return to the original | | Confusing markup and margin | 50% markup on $10 = $15; 50% margin means cost is $5 | ## Reverse Percentage Finding the original value before a percentage was applied is a reverse calculation. If a discounted price is $85 after a 15% discount, the original price is `85 / (1 - 0.15) = 85 / 0.85 = $100`. ## Applications - **Sales tax**: Total = Price * (1 + Tax Rate) - **Tip calculation**: Tip = Subtotal * Tip Rate - **Grade calculation**: Score = (Points Earned / Total Points) * 100 - **Growth rate**: Compare … ### Unit Conversion Fundamentals: A Complete Reference Converting between units is essential in science, engineering, cooking, and everyday life. This guide covers dimensional analysis, common conversion factors, and techniques to avoid errors. - URL: https://peasytools.com/guides/unit-conversion-fundamentals/ - Category: How-To - Reading time: 1 min - Words: 253 Key takeaways: - Dimensional analysis uses conversion factors as fractions where the numerator and denominator are equivalent quantities. - Temperature conversions use formulas, not simple factors: - When no direct factor exists, chain multiple conversions. - Forgetting to square or cube conversion factors for area and volume ## The Dimensional Analysis Method Dimensional analysis uses conversion factors as fractions where the numerator and denominator are equivalent quantities. Multiply your value by the factor so that unwanted units cancel out. Example: Convert 5 miles to kilometers. `5 mi * (1.60934 km / 1 mi) = 8.047 km` The `mi` units cancel, leaving `km`. ## Common Conversion Factors ### Length | From | To | Factor | |------|-----|-------| | inches | centimeters | × 2.54 | | feet | meters | × 0.3048 | | miles | kilometers | × 1.60934 | | nautical miles | kilometers | × 1.852 | ### Weight / Mass | From | To | Factor | |------|-----|-------| | ounces | grams | × 28.3495 | | pounds | kilograms | × 0.453592 | | tons (US) | metric tonnes | × 0.907185 | ### Temperature Temperature conversions use formulas, not simple factors: - Celsius to Fahrenheit: `F = C * 9/5 + 32` - Fahrenheit to Celsius: `C = (F - 32) * 5/9` - Celsius to Kelvin: `K = C + 273.15` ## Chaining Conversions When no direct factor exists, chain multiple conversions. To convert square feet to square meters: convert feet to meters first (`× 0.3048`), then square the result: `1 ft² = 0.3048² m² = 0.0929 m²`. ## Common Mistakes - Forgetting to square or cube conversion factors for area and volume - Mixing up US gallons (3.785L) and Imperial gallons (4.546L) - Using troy ounces (31.103g) when standard ounces (28.35g) are needed ## Glossary (100 terms) ### 12-Factor App (Twelve-Factor Application) A methodology of twelve best practices for building scalable, maintainable software-as-a-service applications. - URL: https://peasytools.com/glossary/12-factor-app/ ### 2FA (Two-Factor Authentication) A security process requiring two distinct forms of identification — typically a password and a code from a separate device. - URL: https://peasytools.com/glossary/2fa/ ### 301 Redirect (301 Permanent Redirect) An HTTP status code permanently redirecting one URL to another, transferring most link equity to the new URL. - URL: https://peasytools.com/glossary/301-redirect/ ### AAC (Advanced Audio Coding) A lossy audio codec designed as the successor to MP3, offering better quality at similar bitrates. - URL: https://peasytools.com/glossary/aac/ ### ABR (Adaptive Bitrate Streaming) A streaming technique that dynamically adjusts video quality based on the viewer's network conditions. - URL: https://peasytools.com/glossary/abr/ ### A/B Testing (A/B Split Testing) Comparing two versions of content by showing each to a random subset of users to determine which performs better. - URL: https://peasytools.com/glossary/ab-testing/ ### Accessibility (Design Accessibility (a11y)) Designing products usable by people with disabilities, following WCAG guidelines for perceivable and operable interfaces. - URL: https://peasytools.com/glossary/accessibility/ ### AcroForm (Acrobat Form Technology) The standard interactive form technology in PDF documents, supporting text fields, checkboxes, radio buttons, and digital signatures. - URL: https://peasytools.com/glossary/acroform/ ### AES (Advanced Encryption Standard) A symmetric block cipher used worldwide for encrypting sensitive data, with key sizes of 128, 192, or 256 bits. - URL: https://peasytools.com/glossary/aes/ ### Affordance (Design Affordance) A visual cue suggesting how an element should be used (e.g. a raised button affords clicking). - URL: https://peasytools.com/glossary/affordance/ ### AIFF (Audio Interchange File Format) An Apple-developed uncompressed audio format similar to WAV, commonly used in professional audio on macOS. - URL: https://peasytools.com/glossary/aiff/ ### Algorithm (Social) (Social Media Algorithm) A ranking system that determines which content appears in a user's feed based on engagement signals, relevance, and recency. - URL: https://peasytools.com/glossary/algorithm-social/ ### Aliasing (Audio) (Audio Aliasing) Distortion occurring when audio frequencies above the Nyquist limit are sampled, producing false lower frequencies. - URL: https://peasytools.com/glossary/aliasing-audio/ ### Alignment Pattern (QR Code Alignment Pattern) Smaller square patterns in larger QR codes that help correct distortion when scanning at an angle. - URL: https://peasytools.com/glossary/alignment-pattern/ ### Alpha Channel (Alpha Channel (Transparency Mask)) An alpha channel stores transparency information for each pixel in an image, with values ranging from fully transparent to fully opaque. It is the fourth channel in RGBA color, enabling smooth blending of images over backgrounds. - URL: https://peasytools.com/glossary/alpha-channel/ ### Alpha Compositing (Alpha Compositing) Combining semi-transparent images by blending pixel colors according to their alpha channel values. - URL: https://peasytools.com/glossary/alpha-compositing/ ### Alt Text (Image Alternative Text) A text description of an image for accessibility and SEO, displayed when the image cannot be loaded. - URL: https://peasytools.com/glossary/alt-text/ ### Analogous Colors (Analogous Color Scheme) Three or more colors adjacent on the color wheel, producing harmonious and visually cohesive palettes. - URL: https://peasytools.com/glossary/analogous-colors/ ### Anchor Positioning (CSS Anchor Positioning) A layout feature that positions elements relative to a named anchor element, useful for tooltips and popovers. - URL: https://peasytools.com/glossary/anchor-positioning/ ### Anchor Text (Link Anchor Text) The visible clickable text of a hyperlink, providing context to search engines about the linked page's topic. - URL: https://peasytools.com/glossary/anchor-text/ ### Annotation (PDF Annotation) A markup element added to a PDF page, such as highlights, comments, stamps, or drawing shapes. - URL: https://peasytools.com/glossary/annotation/ ### API (Application Programming Interface) A set of protocols and tools enabling different software applications to communicate with each other. - URL: https://peasytools.com/glossary/api/ ### API Gateway (API Gateway) A server that acts as a single entry point for API requests, handling routing, authentication, and rate limiting. - URL: https://peasytools.com/glossary/api-gateway/ ### APNG (Animated Portable Network Graphics) An extension of PNG supporting animated images with full alpha transparency, superior to GIF's 256-color limit. - URL: https://peasytools.com/glossary/apng/ ### Archive (File Archive) A single file that bundles multiple files and directories together, optionally with compression, for storage or transfer. - URL: https://peasytools.com/glossary/archive/ ### Argon2 (Argon2 Key Derivation Function) The winner of the Password Hashing Competition, designed to be memory-hard and resistant to GPU cracking attacks. - URL: https://peasytools.com/glossary/argon2/ ### ARIA (Accessible Rich Internet Applications) A set of HTML attributes that define roles, states, and properties for UI elements, making dynamic content accessible to assistive technologies. - URL: https://peasytools.com/glossary/aria/ ### Arrow (Apache Arrow) A cross-language columnar memory format for flat and hierarchical data, enabling zero-copy reads for analytics. - URL: https://peasytools.com/glossary/arrow/ ### ASCII (American Standard Code for Information Interchange) A 7-bit character encoding standard representing 128 characters including English letters, digits, and control codes. - URL: https://peasytools.com/glossary/ascii/ ### Aspect Ratio (Aspect Ratio (Width-to-Height Proportion)) Aspect ratio is the proportional relationship between an image's width and height, expressed as two numbers separated by a colon. Common ratios include 16:9 (widescreen), 4:3 (classic), and 1:1 (square). - URL: https://peasytools.com/glossary/aspect-ratio/ ### Aspect Ratio (CSS) (CSS aspect-ratio Property) A property that sets a preferred width-to-height ratio for an element, preventing layout shift during loading. - URL: https://peasytools.com/glossary/aspect-ratio-css/ ### AST (Abstract Syntax Tree) A tree representation of the syntactic structure of source code, used by compilers and code analysis tools. - URL: https://peasytools.com/glossary/ast/ ### Audio Codec (Audio Codec) Software that encodes raw audio into a compressed format and decodes it back for playback (e.g. MP3, AAC, FLAC). - URL: https://peasytools.com/glossary/audio-codec/ ### Audio Fingerprint (Acoustic Fingerprinting) A compact digital summary of an audio signal used to identify songs or detect duplicate content. - URL: https://peasytools.com/glossary/audio-fingerprint/ ### Audio Watermark (Audio Watermarking) Embedding imperceptible identifying data into an audio signal for copyright tracking and content identification. - URL: https://peasytools.com/glossary/audio-watermark/ ### AV1 (AOMedia Video 1) A royalty-free video codec offering 30-50% better compression than H.265, developed by the Alliance for Open Media. - URL: https://peasytools.com/glossary/av1/ ### AVIF (AV1 Image File Format) A next-generation image format based on the AV1 video codec, offering superior compression. - URL: https://peasytools.com/glossary/avif/ ### AVIF Sequence (AVIF Image Sequence) An animated image format using AVIF's AV1 compression, offering dramatically smaller files than GIF or APNG. - URL: https://peasytools.com/glossary/avif-sequence/ ### Aztec Code (Aztec Barcode) A 2D barcode with a bullseye finder pattern in the center, used on airline boarding passes and transit tickets. - URL: https://peasytools.com/glossary/aztec-code/ ### Backlink (Inbound Backlink) A hyperlink from one website to another, used by search engines as a signal of content authority and trust. - URL: https://peasytools.com/glossary/backlink/ ### Backpressure (Stream Backpressure) A flow control mechanism where a slow consumer signals a fast producer to reduce its output rate, preventing buffer overflow. - URL: https://peasytools.com/glossary/backpressure/ ### Base58 (Base58 Encoding) A binary-to-text encoding that excludes visually ambiguous characters (0, O, I, l), used in Bitcoin addresses. - URL: https://peasytools.com/glossary/base58/ ### Base64 (Base64 Encoding) A binary-to-text encoding scheme that represents binary data as ASCII characters. - URL: https://peasytools.com/glossary/base64/ ### Baseline Grid (Typographic Baseline Grid) A horizontal grid aligned to text baselines that maintains consistent vertical rhythm across a page. - URL: https://peasytools.com/glossary/baseline-grid/ ### Batch Processing (Batch File Processing) Processing multiple files simultaneously using the same operation, saving time on repetitive tasks. - URL: https://peasytools.com/glossary/batch-processing/ ### Batch Resize (Batch Image Resize) Processing multiple images at once to change their dimensions to a uniform size or percentage of the original. - URL: https://peasytools.com/glossary/batch-resize/ ### Bates Numbering (Bates Numbering) A sequential numbering system used in legal documents for identification and retrieval. - URL: https://peasytools.com/glossary/bates-numbering/ ### Bayes' Theorem (Bayes' Theorem) A formula for updating the probability of a hypothesis given new evidence, foundational to statistical inference. - URL: https://peasytools.com/glossary/bayes-theorem/ ### Bcrypt (Bcrypt Password Hash) An adaptive password hashing function with a configurable work factor that slows brute-force attacks. - URL: https://peasytools.com/glossary/bcrypt/ ### BEM (Block Element Modifier) A CSS naming convention using block__element--modifier format to create reusable, maintainable class names. - URL: https://peasytools.com/glossary/bem/ ### B-Frame (Bidirectional Predicted Frame) A video frame that references both preceding and following frames for highly efficient compression. - URL: https://peasytools.com/glossary/b-frame/ ### Big O Notation (Big O Notation) A mathematical notation describing the upper bound of an algorithm's time or space complexity as input size grows. - URL: https://peasytools.com/glossary/big-o-notation/ ### Binomial Distribution (Binomial Probability Distribution) A discrete probability distribution modeling the number of successes in a fixed number of independent yes/no trials. - URL: https://peasytools.com/glossary/binomial-distribution/ ### Bio Link (Social Media Bio Link) A single URL in a social media profile, often a link-in-bio page aggregating multiple destinations. - URL: https://peasytools.com/glossary/bio-link/ ### Bit Depth (Bit Depth (Color Depth / Bits Per Pixel)) Bit depth determines the number of possible color values each pixel can represent. Higher bit depths allow more colors and smoother gradients: 8-bit provides 256 values per channel (16.7M colors), while 16-bit provides 65,536. - URL: https://peasytools.com/glossary/bit-depth/ ### Bit Depth (Audio) (Audio Bit Depth) The number of bits in each audio sample, determining the dynamic range and noise floor (e.g. 16-bit, 24-bit). - URL: https://peasytools.com/glossary/bit-depth-audio/ ### Bitrate (Audio Bitrate) The amount of audio data processed per second, measured in kbps, directly affecting quality and file size. - URL: https://peasytools.com/glossary/bitrate/ ### Bitrate (Video) (Video Bitrate) The amount of video data processed per second, directly affecting quality and file size of the output. - URL: https://peasytools.com/glossary/bitrate-video/ ### BMP (Bitmap Image Format) An uncompressed raster graphics format storing color data for each pixel, resulting in large file sizes. - URL: https://peasytools.com/glossary/bmp/ ### BOM (Byte Order Mark) A special Unicode character at the start of a file indicating its encoding and byte order. - URL: https://peasytools.com/glossary/bom/ ### Bookmark (PDF Bookmark) A navigational element in a PDF outline that links to a specific location within the document. - URL: https://peasytools.com/glossary/bookmark/ ### Boolean Algebra (Boolean Algebra) A branch of algebra operating on true/false values using AND, OR, NOT operators, foundational to digital logic. - URL: https://peasytools.com/glossary/boolean-algebra/ ### Box Model (CSS Box Model) The layout model where every element is a box with content, padding, border, and margin areas. - URL: https://peasytools.com/glossary/box-model/ ### Breadcrumb (Breadcrumb Navigation) A hierarchical navigation trail showing the user's location within a site, enhancing UX and enabling rich results. - URL: https://peasytools.com/glossary/breadcrumb/ ### Brotli (Brotli Compression) A Google-developed compression format optimized for web content, achieving 15-25% better ratios than gzip. - URL: https://peasytools.com/glossary/brotli/ ### Buffer (Data Buffer) A temporary storage area holding data while it is being transferred between processes or devices. - URL: https://peasytools.com/glossary/buffer/ ### Buffering (Data Buffering) Temporarily storing data in memory during transfer between components to smooth out differences in processing speed. - URL: https://peasytools.com/glossary/buffering/ ### Cache (Data Cache) A high-speed storage layer that saves copies of frequently accessed data for faster subsequent retrieval. - URL: https://peasytools.com/glossary/cache/ ### Cache-Control (Cache-Control HTTP Header) An HTTP header that specifies caching policies such as max-age, no-store, and immutable for browsers and CDN proxies. - URL: https://peasytools.com/glossary/cache-control/ ### Calc (CSS calc() Function) A function for performing arithmetic calculations with mixed units in CSS property values (e.g. calc(100% - 2rem)). - URL: https://peasytools.com/glossary/calc/ ### Canary Release (Canary Deployment) A deployment strategy that routes a small percentage of traffic to a new version to detect issues before full rollout. - URL: https://peasytools.com/glossary/canary-release/ ### Canonical URL (Canonical URL Tag) An HTML element specifying the preferred version of a page when duplicate or similar content exists at multiple URLs. - URL: https://peasytools.com/glossary/canonical-url/ ### Canvas (Canvas (Image Working Area)) In image editing, the canvas is the total working area that defines the boundaries of the image. Resizing the canvas adds or removes space around the existing image content without scaling it. - URL: https://peasytools.com/glossary/canvas/ ### Caption (Social Media Caption) The text accompanying a social media post, often including hashtags, mentions, and calls to action. - URL: https://peasytools.com/glossary/caption/ ### Carousel (Social Media Carousel) A post format displaying multiple images or slides that users swipe through horizontally. - URL: https://peasytools.com/glossary/carousel/ ### Cascade (CSS Cascade) The mechanism by which browsers resolve conflicting CSS declarations based on origin, specificity, and order. - URL: https://peasytools.com/glossary/cascade/ ### Case Conversion (Text Case Conversion) Transforming text between uppercase, lowercase, title case, sentence case, or camelCase formats. - URL: https://peasytools.com/glossary/case-conversion/ ### CBR (Constant Bitrate) A video encoding mode maintaining a fixed data rate throughout, providing predictable file sizes and bandwidth usage. - URL: https://peasytools.com/glossary/cbr/ ### CDN (Content Delivery Network) A geographically distributed network of servers that caches and delivers web content from locations closest to the user. - URL: https://peasytools.com/glossary/cdn/ ### Certificate Pinning (TLS Certificate Pinning) A technique that associates a host with its expected certificate, preventing man-in-the-middle attacks with forged certificates. - URL: https://peasytools.com/glossary/certificate-pinning/ ### CFR (Constant Frame Rate) A video encoding where frames are evenly spaced at a fixed interval, preferred for editing and streaming compatibility. - URL: https://peasytools.com/glossary/cfr/ ### Channel (Audio Channel) An independent audio signal in a recording (mono = 1, stereo = 2, surround = 5.1+). - URL: https://peasytools.com/glossary/channel/ ### Checksum (File Checksum) A value computed from file data used to verify that the file hasn't been altered or corrupted. - URL: https://peasytools.com/glossary/checksum/ ### Checksum Verification (Checksum Verification) Comparing a computed hash value against a known value to confirm data integrity after transfer or storage. - URL: https://peasytools.com/glossary/checksum-verification/ ### Chorus Effect (Audio Chorus Effect) An effect that duplicates a signal with slight pitch and timing variations to simulate multiple voices or instruments. - URL: https://peasytools.com/glossary/chorus-effect/ ### Chroma Key (Chroma Key Compositing) A technique replacing a solid-color background (green screen) with another image or video. - URL: https://peasytools.com/glossary/chroma-key/ ### Chroma Subsampling (Chroma Subsampling (Color Resolution Reduction)) Chroma subsampling reduces the color resolution of an image while preserving full brightness (luminance) detail. Human eyes are less sensitive to color changes than brightness changes, making this an efficient compression technique. - URL: https://peasytools.com/glossary/chroma-subsampling/ ### Chromatic Aberration (Chromatic Aberration) A lens defect causing color fringing at edges where different wavelengths of light focus at slightly different points. - URL: https://peasytools.com/glossary/chromatic-aberration/ ### Chunking (Data Chunking) Dividing data into smaller, manageable pieces for parallel processing, transfer, or memory-constrained environments. - URL: https://peasytools.com/glossary/chunking/ ### CI/CD (Continuous Integration / Continuous Deployment) A development practice where code changes are automatically built, tested, and deployed to production. - URL: https://peasytools.com/glossary/cicd/ ### CIDR (Classless Inter-Domain Routing) A notation for IP address ranges using a base address and prefix length (e.g. 192.168.1.0/24). - URL: https://peasytools.com/glossary/cidr/ ### CJK (Chinese, Japanese, Korean Characters) A collective term for the writing systems of East Asian languages, requiring multi-byte character encodings. - URL: https://peasytools.com/glossary/cjk/ ### Clamp (CSS clamp() Function) A function constraining a value between a minimum and maximum, enabling fluid responsive typography and spacing. - URL: https://peasytools.com/glossary/clamp/ ### CLI (Command-Line Interface) A text-based interface for interacting with software by typing commands rather than using a graphical UI. - URL: https://peasytools.com/glossary/cli/ ### Clickjacking (UI Redress Attack) An attack that tricks users into clicking hidden elements by overlaying invisible frames on top of legitimate page content. - URL: https://peasytools.com/glossary/clickjacking/ ### Clipboard (System Clipboard) A temporary storage area managed by the operating system for data being copied or moved between applications. - URL: https://peasytools.com/glossary/clipboard/ ### Clipping (Audio Clipping) Distortion that occurs when an audio signal exceeds the maximum level a system can handle. - URL: https://peasytools.com/glossary/clipping/ ### CLS (Cumulative Layout Shift) A Core Web Vital measuring unexpected layout movement during page load (target: under 0.1). - URL: https://peasytools.com/glossary/cls/ ### Codabar (Codabar Barcode) A self-checking 1D barcode encoding digits and a few special characters, historically used in libraries and blood banks. - URL: https://peasytools.com/glossary/codabar/ ### Code 128 (Code 128 Barcode) A high-density 1D barcode encoding all 128 ASCII characters, widely used in shipping and logistics. - URL: https://peasytools.com/glossary/code-128/ ## API Base URL: https://peasytools.com/api/v1/ | Endpoint | Description | |----------|-------------| | GET /api/v1/tools/ | List all tools (filterable by category) | | GET /api/v1/tools/{slug}/ | Tool detail with description, steps, FAQ | | GET /api/v1/categories/ | Tool categories | | GET /api/v1/formats/ | File formats reference | | GET /api/v1/formats/{slug}/ | Format detail with history, pros/cons | | GET /api/v1/conversions/ | Format conversion guides | | GET /api/v1/glossary/ | Terminology with definitions | | GET /api/v1/glossary/{slug}/ | Term with simple + technical explanations, code examples, references | | GET /api/v1/guides/ | Educational guides (filterable by category, audience_level) | | GET /api/v1/guides/{slug}/ | Full guide with content, takeaways, ToC, related guides | | GET /api/v1/use-cases/ | Real-world use cases by industry | | GET /api/v1/search/?q={query} | Cross-model search | | GET /api/v1/sites/ | All 16 Peasy sites | OpenAPI spec: https://peasytools.com/api/openapi.json ## Content Negotiation All pages support Markdown output for AI agents: - Add `?format=md` to any page URL - Or send `Accept: text/markdown` header ## Platform Stats - 251 tools across 16 sites - 131 file formats documented - 1484 format conversion guides - 695 glossary terms (with simple + technical explanations) - 645 educational guides (avg 1,308 words) - 302 real-world use cases