CSS Minifier
Minify your CSS code to reduce file size. Removes comments, extra whitespace, and unnecessary characters.
About the CSS Minifier — Minify CSS Online for Free
Minify CSS code instantly to reduce file size and improve page load speed. Remove comments, whitespace, and unnecessary characters. Free, private, browser-based CSS minifier.
Private by design
Everything you type here is processed inside your browser. Nothing is sent to a server, logged or stored, so it is safe to use with real numbers, drafts and anything you would not paste into a hosted tool.
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Questions people ask
What does CSS minification do?
CSS minification removes comments, extra whitespace, newlines, and unnecessary characters from your CSS code, producing a smaller file that loads faster in browsers.
Will minifying CSS break my styles?
No. Minification only removes formatting and comments — it does not change the meaning of your CSS rules. Your styles will render identically.
How much can CSS minification save?
Typical savings range from 20% to 50% depending on how much whitespace and comments your original CSS contains. The tool shows the exact savings percentage.
Is this CSS minifier private?
Yes. All minification happens locally in your browser. Your CSS code is never uploaded to any server.