How it works
How to use the HTML Formatter
Paste HTML
A full document or a fragment.
Adjust the style
Indent size, line wrapping, attribute layout and whether <head>/<body> are indented.
Copy or download
Switch to Minify to strip comments and collapse whitespace.
Safe minification
The minifier removes comments (except conditional comments) and collapses runs of whitespace to a single space, which is always safe for rendering. The contents of <pre>, <textarea>, <script> and <style> are left untouched. Formatting uses js-beautify, the engine behind many editors’ “Format document” command.
Built for developers
Why developers use it
Private by design
Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.
Instant results
Output updates as you type, with precise error locations when something is wrong.
Works offline
Once loaded, the tool keeps working without a connection. Install it as an app if you like.
Free, no sign-up
No accounts, no limits, no watermarks.
FAQ
Frequently asked questions
Will formatting change how my page looks?
Beautifying only adds whitespace between tags, which browsers render the same in almost all cases. Whitespace-sensitive elements like <pre> are preserved.
Is my HTML executed?
No. The markup is treated purely as text and is never rendered or run.
Is my data uploaded anywhere?
No. This tool runs entirely in your browser. Your input never leaves your device, is not logged, and works offline once the page has loaded.
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