Beautify (pretty-print) or minify HTML, CSS, and JavaScript in one place. Paste your code, pick a language, and format it — 100% client-side, nothing leaves your browser. Just need CSS? Try the dedicated CSS Minifier, or for JSON payloads use the JSON Formatter.
One tool for the three languages you touch every day: HTML, CSS, and JavaScript. Switch the language tab, paste your code, and click Beautify to re-indent it for readability, or Minify to strip comments and unnecessary whitespace before shipping it to production.
The beautifiers use fast, dependency-free formatting logic tuned for everyday code — component markup, utility CSS, small scripts and snippets. They're not a byte-for-byte replacement for a full build-tool formatter like Prettier on deeply nested or unusual syntax, but they handle the vast majority of real-world code cleanly. The JavaScript minifier intentionally favors safety over maximum compression: it strips comments and collapses whitespace but keeps line breaks where removing them could change behavior (a classic risk with JavaScript's automatic semicolon insertion). For a production JS bundle, pair this with a proper bundler-integrated minifier like Terser.
Beautify messy or minified code you need to read, debug, or hand off to a teammate. Minify code you're about to ship — smaller HTML, CSS, and JS files mean fewer bytes over the wire and faster page loads.
No. Beautifying and minifying both run entirely in your browser with JavaScript — nothing is sent to a server.
JavaScript can silently change behavior when lines that rely on automatic semicolon insertion get joined together. This tool trades a little extra file size for the guarantee that it won't rewrite your code's logic.
It's built for plain HTML, CSS, and JavaScript. Preprocessor or transpiled syntax may format imperfectly since it isn't parsed with a full language grammar.
Tell us what to improve or which tool to add next.
