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CSS Minifier

Strip comments and whitespace from CSS to make the file smaller.

Your CSS

Size: —

How to use the CSS Minifier

  1. Paste the CSS you want to compress.
  2. Click Minify to strip comments and whitespace.
  3. Copy the minified result and the size saving shown below.

Features

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Frequently Asked Questions

Common questions about the free online css minifier.

It removes comments, line breaks and unnecessary spaces so the stylesheet downloads faster, without changing how it renders.
It should not. The minifier keeps quoted strings intact and only removes whitespace that CSS does not need.
Typical stylesheets shrink by 15 to 40 percent depending on how much commenting and indentation they contain.
Yes. Always keep the readable source and deploy the minified copy, so the file stays maintainable.
No. This tool minifies one stylesheet at a time. Concatenate your files first if you want a single bundle.
No. Minification runs entirely in your browser, so nothing is uploaded to a server.
Yes. The tool is fully responsive and works in any modern browser on desktop, tablet and phone.
Yes, it is completely free with no account required.

Last updated: October 10, 2026