Text & Markup
Preview Markdown, LaTeX and Mermaid, prepare rich text for Google Docs, compare lists, check Chinese ad wording and generate formatted text.
Markdown Preview
Live preview a .md file with GitHub styling.
LaTeX Preview
Render LaTeX math live with KaTeX. Inline + block.
Mermaid Live Editor
Live Mermaid diagrams in the browser — pan, zoom, SVG/PNG export, mermaid.live import. No upload.
Markdown to Google Docs
Convert Markdown to a paste-ready Google Doc. Roboto + LaTeX math.
Ad-Law Word Checker
Check Chinese ad copy against 广告法 banned words — catches traditional characters and spacing tricks, no upload.
Compare Lists
Paste two lists, get unique/common/union in one pass — case, whitespace and find-replace clean-up.
Lorem Ipsum Generator
Paragraphs, sentence length, classic opening, shuffle — placeholder text without a trip to the other site.
Text to Handwriting
Five handwriting fonts on lined or grid paper — download a PNG, fonts self-hosted.
Bionic Reading
Bold the fixation of each word, copy HTML or Markdown. Not affiliated with Bionic Reading®.
Case Converter
Switch text between 9 case modes — UPPERCASE, Title Case, camelCase, snake_case — live, with .txt import, copy and download.
Character Counter
Code-point, grapheme and UTF-16 lengths plus letters, digits, symbols, whitespace, lines and words — from a paste or a local .txt.
Line Counter
Total and non-empty line counts plus a most-frequent-lines table with three hide filters and a max-rows cap — counted live, nothing uploaded.
Word Counter
Words, characters, lines, paragraphs and sentences counted live — six figures plus top word frequency — from a paste or a local .txt.
Word Frequency Counter
Rank every word by count and share — paste, type or open a local .txt, live frequency table with a row cap, nothing uploaded.
Notepad
Write or open a plain-text file in your tab — New, Open, Save, Cut, Copy, Paste, Undo, Redo and zoom, nothing uploaded.
Notepad
Write your notes online — one big textarea with live char/word/line stats, autosaved in your browser, Copy, Download as .txt and Clear.
Notes
A multi-page online notepad — Prev/Next between notes, Add and Delete, every note saved in your browser, no login.
Image Compressor · Image Resizer · Image Converter · HEIC to JPG …
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