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.
25 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.
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.
Reading Time
Estimate reading time from the word or character count of pasted text.
Japanese Dummy Text Generator
Generate Japanese dummy text (Japanese lorem ipsum) with kanji+kana, katakana, or hiragana — ideal for previewing Japanese layout.
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.
Lorem Ipsum Generator
Generate Lorem ipsum placeholder text by paragraphs, sentences or words.
Markdown Preview
Render Markdown to HTML instantly. Tables and code blocks supported, with one-click HTML copy.
Subtitle Timing Adjuster
Shift a whole SRT or WebVTT subtitle file forwards or backwards to fix out-of-sync captions. Converts between the two formats and rescales for frame rates, all inside your browser with no upload.
Slug Generator
Create URL-friendly slugs (hello-world) from text, with accent removal and separator options.
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.
Regex Visual Builder
Build a regex by connecting blocks, color-code matches in a test table, and read the meaning in a structure map.
Character Counter
Paste text to instantly count characters (with/without spaces), words, lines, and bytes, with characters-to-words conversion tables (60, 160, 400 and more).
Characters to Words
Convert characters to words and back, with presets and real-text measurement.
Invisible Character Checker
Find zero-width spaces, ideographic spaces, NBSP, BOM and control characters with code points and positions, then clean the kinds you pick.
Case Converter
Convert text between camelCase, snake_case, kebab-case and more.
Dummy Article HTML Generator
Generate article markup with headings, lists, quotes and tables to check how a CMS theme or article CSS handles real nesting.
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.
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.
Character & Word Frequency
Counts how often each character or word appears, ranked by frequency with shares and bars. Top-N limit and CSV/TSV export. Runs in your browser.
Lorem Ipsum by Character Count
Generate placeholder text at an exact character count, in Latin Lorem ipsum or Japanese.
Text Wrapper
Wrap text at a chosen line width, with column-aware counting for full-width characters.
Ruby (Furigana) HTML Generator
Turn the kanji《reading》 notation into ruby / rt / rp markup, with per-character readings and a live preview.