CSS Formatter

Format, beautify, and minify CSS instantly in your browser.

FreeBrowser-basedInstant
Result
Paste or type CSS on the left to see it formatted here.

Your files are processed locally in your browser and are not uploaded to our servers. Formatting happens instantly as you type, entirely in your browser — nothing is sent anywhere.

How to use CSS Formatter

Paste or type CSS into the input box and this tool reformats it with consistent indentation, one declaration per line, and each comma-separated selector on its own line — as you type. Switch to Minify for a compact, whitespace-stripped version, then copy it to your clipboard or download it as a .css file.

Key features

  • Instant client-side formatting as you type
  • One declaration per line, comma-separated selectors split onto their own lines
  • Adjustable indentation (2 spaces, 4 spaces, or a tab)
  • One-click Minify mode for a compact, comment-free output
  • Syntax-highlighted result (selectors, properties, values)
  • One-click copy to clipboard, or download as a .css file

Practical use cases

  • Cleaning up a minified stylesheet pulled from a live site for readability
  • Tidying up hand-written or auto-generated CSS before a code review
  • Minifying a stylesheet before shipping it to production
  • Standardizing indentation across a CSS file with mixed formatting

Supported formats

Accepted: css

Limitations

  • A hand-written formatter, not a full CSS parser — deeply unusual or malformed CSS may not reformat perfectly
  • Very large stylesheets (multiple megabytes) may be slow on low-memory devices

Frequently asked questions

Does this tool upload or store my CSS anywhere?
No. All formatting and minifying happens locally in your browser using JavaScript. Your CSS is never transmitted or stored.
Can it minify CSS as well as format it?
Yes. Switch the output mode from "Pretty" to "Minify" to get a compact version with whitespace and comments stripped — useful for shrinking a stylesheet before shipping it.
What happens if I paste invalid or broken CSS?
The formatter does its best to reformat whatever structure it can find, but badly broken CSS (mismatched braces, unterminated strings) can produce unexpected output — always review the result before using it.

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