Paste your CSS in the input panel. The minifier instantly removes comments, collapses whitespace, strips spaces around punctuation, and removes trailing semicolons. The output shows the percentage of size saved.

What does CSS minification do?

CSS minification removes all characters that are not required for the browser to parse the stylesheet: comments, whitespace, newlines, and redundant semicolons. This reduces file size and improves page load speed.

Is the CSS minifier free?

Yes, completely free. Minification runs entirely in your browser — no data is sent to any server, and no signup is required.

CSS Minifier

Minify and compress CSS instantly online. Removes comments, collapses whitespace, and strips unnecessary characters. Free CSS minifier — no signup, runs entirely in your browser.

CSS Input

Minified CSS

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How to Use the CSS Minifier

Paste your CSS in the left panel.
The minified output appears instantly with a size-saved percentage.
Click "Copy Output" to copy the minified CSS to your clipboard.
Use "Load Example" to see a sample minification.