Text
Tools for working with text: counting characters, comparing differences, formatting and converting. Useful both for checking manuscript length and for string handling during development.
17 tools・Ordered by measured page views over the last 90 days.
Manuscript Paper Sheet Counter
Convert a character count into 400-square and 200-square Japanese manuscript paper (genkoyoshi) sheets. Shows characters and lines; spaces optional.
Kana to Romaji Converter
Convert hiragana and katakana to romaji in passport-style Hepburn or Kunrei-shiki.
Lorem Ipsum Generator
Generate Lorem ipsum placeholder text by paragraphs, sentences or words.
Slug Generator
Create URL-friendly slugs (hello-world) from text, with accent removal and separator options.
Reading Time
Estimate reading time from the word or character count of pasted text.
Character Counter
Paste text to instantly count characters (with/without spaces), words, lines, and bytes.
Case Converter
Convert text between camelCase, snake_case, kebab-case and more.
Full-width / Half-width Converter
Convert between full-width and half-width letters, symbols, katakana, and spaces by target. For normalizing form input and CSV. Runs in your browser.
Characters to Words
Convert characters to words and back, with presets and real-text measurement.
Japanese Dummy Text Generator
Generate Japanese dummy text (Japanese lorem ipsum) with kanji+kana, katakana, or hiragana — ideal for previewing Japanese layout.
Text Diff
Compare two texts and highlight added and removed lines.
Regex Tester
Test a regex against sample text with live match and group highlighting.
Line Tools
Sort lines, remove duplicates, drop blank lines and trim whitespace.
Newline Converter
Convert line endings between CRLF, LF, and CR, with detection and line count. Fixes Windows vs Unix/Mac and Git or editor warnings. Runs in your browser.
Line Sorter & Duplicate Remover
Sort text by line, remove duplicate lines, delete blank lines and trim spaces. Ascending/descending, case sensitivity and natural (numeric) order. Runs in your browser.
NATO Phonetic Alphabet Converter
Convert letters and digits into the NATO/ICAO phonetic code (Alfa, Bravo, Charlie…) for spelling out text clearly on the phone or radio.
Markdown Preview
Render Markdown to HTML instantly. Tables and code blocks supported, with one-click HTML copy.