CSS Minifier
Minify CSS: strip comments and whitespace, shorten colours and zero units. Free and private: runs in your browser.
Paste CSS to get a compact version and see the size saving.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Clean up code or data before sharing it in a ticket or pull request.
- Make minified output readable while debugging.
- Shrink files before deploying.
Frequently asked questions
Is it safe to minify CSS?
Yes. Whitespace and comments have no effect on styles. Strings and URLs are preserved exactly.
Is the CSS Minifier free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
Will formatting change how my code behaves?
Formatting only changes whitespace and layout. Minifying removes comments and whitespace and may shorten names, so keep the original source in version control.
Related tools
Checking one snippet is a start. Scan your whole repository for free with CodeInspector.