Online Tool Store
CSS Formatter
Reformat minified or messy CSS into clean, consistently indented stylesheets, live as you type, preserving comments. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Nothing is uploaded — formatting runs entirely in your browser.
How it works
- Paste minified or messy CSS on the left.
- See it reformatted with consistent indentation on the right, live as you type.
- Copy the result.
FAQ
Does this validate my CSS, or just format it?
It only reformats whitespace and indentation — it doesn't check for invalid properties, typos, or browser compatibility. A property that doesn't exist will still be formatted neatly; it just won't be flagged as wrong.
Are comments preserved?
Yes — /* comments */ are kept in place, on their own line, exactly where they appeared in the original.
Does it handle nested rules, like in Sass or CSS nesting?
Yes — the formatter tracks brace depth generically, so nested rule blocks (native CSS nesting, or Sass-like syntax) get indented one level deeper than their parent, the same as regular rules.
Is my CSS uploaded anywhere?
No — formatting runs entirely with plain JavaScript in your browser. Nothing is sent anywhere.
How we compare
| Feature | Online Tool Store | Online CSS beautifiers | IDE formatter (Prettier, etc.) |
|---|---|---|---|
| No install or config needed | ✓ | ✓ | Requires an IDE + extension/config |
| No file upload — runs in your browser | ✓ | Some send code to a server | ✓ |
| No ads | ✓ | Ad-supported | ✓ |
For a one-off snippet you're debugging or sharing, this beats switching to your editor just to reformat a few lines.