All tools
64 utilities for text, data, images and video, audio, files, hashing, time, color, math and the web. Most processing runs on your device. Sharing and network tools use online services; see each tool’s instructions.
Text & Encoding11
Encoding
- Text Transformer45+ encoders, case converters and text utilities in one place
- Base64Convert text and data to and from Base64 (and Base64URL)
- URL Encode & DecodePercent-encode and decode text for safe use in URLs
- HTML EntitiesEscape and unescape HTML special characters
- Gzip / DeflateCompress and decompress text with gzip, zlib and raw deflate
Scripts & languages
- Full-width ↔ Half-widthConvert between full-width (全角) and half-width (半角) Japanese & Latin characters
- Katakana ↔ HiraganaConvert Japanese kana between katakana (カタカナ) and hiragana (ひらがな)
- Finglish → FarsibetaType Persian with Latin letters (Pinglish) and get Persian script — tap any word to fix its spelling
- Romaji ↔ KanaConvert romaji to hiragana or katakana — and kana back to Hepburn romaji
JSON & Data2
Images & Video12
Video
- Video editorbetaJoin, trim, straighten, grade and score hours of footage up to 8K, then export for YouTube or anywhere else — all in the browser
- Video converterConvert and compress video in your browser — MP4, MOV, WebM, MKV; H.264, HEVC, AV1, VP9; target size, resolution, frame rate, trim, crop, rotate
- Video doctorbetaCheck a video for YouTube or any player — what is wrong, why it matters, and the fix, done in your browser
- MP4 tagsbetaAdd a title, artist, album, genre, year, comment and the music-video kind to an MP4 or MOV — written into the file itself, nothing re-encoded
- Slow-mo to normal speedbetaRestore real time to a slow-motion clip — evenly retimed so no judder is introduced, with optional shake reduction — in your browser
Audio & Music7
Music math
- Note ↔ frequencyAny note, frequency or MIDI number to the other two — with cents, tuning and a piano table
- BPM ↔ msDelay and LFO times for every note value, tap tempo, bars ↔ seconds and tempo-change math
- Transpose chordsMove a chord sheet to any key, pick sharps or flats, add a capo, and see the scale and diatonic chords
- DecibelsdB to amplitude and power ratios, dBu/dBV/volts, bit-depth dynamic range and SPL over distance
- Semitones ↔ centsSemitones ↔ cents ↔ frequency ratio ↔ playback speed, interval names and sample-rate pitch shifts
Files & Archives4
Crypto & Hashing5
Generators4
Time & Date6
Color & Design2
Math & Units3
Web & Dev8
Editors
- Markdown EditorWrite Markdown with a live GitHub-flavoured preview, a formatting toolbar, and export to HTML or PDF
- Code editorWrite, prettify and syntax-check code in 90 languages, in the browser
- Mermaid editorWrite Mermaid, see the diagram as you type, then print it or export SVG, PNG and Markdown
- Track changesEdit a text and show every change as a redline — accept or reject each one, comment, and share it all as a link
Developer tools
- DiffCompare text by line, word or character — unified or side by side — and export or apply patches
- RegexTest JavaScript regular expressions live — highlighted matches, capture groups, replace preview and a cheat sheet
- JWTbetaDecode a JSON Web Token, check its expiry, verify the signature with a secret or public key, or sign a new one
- URL shortenerbetaTurn a URL of up to 200,000 characters into a short link — best-effort, made for handing off, not forever
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