Track length and reading time
Live word and character counts keep you within editorial and SEO limits.
Writing tools
Word Counter
Count words, characters, sentences, paragraphs and estimate reading time as you type.
Markdown to HTML Converter
Write Markdown and instantly preview the rendered HTML, then copy the source.
URL Slug Generator
Turn any title into a clean, SEO-friendly URL slug with your chosen separator.
Case Converter
UPPER, lower, Title, sentence, camel, snake, kebab and alternating case in one click.
Text Diff Checker
Compare two texts and highlight every added or removed line instantly.
Number to Words Converter
Spell numbers in English or convert amounts to Chinese financial capital characters.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words for mockups and designs.
URL Encode / Decode
Percent-encode or decode URLs and query parameters safely and instantly.
PDF to Text Converter
Extract selectable text from a PDF and copy or download it as a TXT file.
Social Media Image Resizer
One photo, every platform size — pick what you need and export a ZIP.
QR Generator
Make QR codes for links and Wi-Fi.
Image Watermark
Stamp text or a logo onto a whole batch of photos — locally, never uploaded.
Keyword Density Analyzer
Count word frequencies and density percentages in your content, with the top terms ranked.
Readability Checker
Score English text with Flesch Reading Ease and grade-level formulas, plus sentence stats.
Text Redactor & Data Masker
Mask phone numbers, emails, Chinese ID cards and bank card numbers before sharing text.
HTML Entities Encoder/Decoder
Encode text to HTML entities and decode entities back, with named or numeric output.
Citation Generator (APA / MLA / GB-T)
Build APA 7, MLA 9 and GB/T 7714 references for books, websites and journal articles.
Text to Speech Reader
Read any text aloud in your browser with voice, rate and pitch controls — fully offline.
Open Graph Meta Generator
Fill a form and generate Open Graph and Twitter card meta tags for instant previews.
Pomodoro Timer
Focus sprints with a task list and background noise.
How writers use Sort123
Format for the web
Turn Markdown into clean HTML, generate URL slugs and fix capitalization in a click.
Research and compare
Diff two drafts, extract text from PDFs and prepare social cover images offline.