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CSS Minifier

Minify CSS to reduce file size.

How to use

  1. Paste your CSS in the input area
  2. Click Minify — the stats bar shows original vs. minified size and the savings percentage
  3. Click Copy to copy the minified output to your clipboard

What gets removed

  • Whitespace and newlines (usually 30–50% of a CSS file)
  • Comments — section headers, browser quirk notes, TODOs
  • Trailing semicolons before closing braces
  • Redundant zeros (0px → 0, 0.5 → .5)

Typical result: 25–40% size reduction before compression. Combined with gzip/Brotli at the server, the total reduction is usually 80–85%.

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Use via API

Integrate this tool into your workflow with our free REST API.

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Related Guides

CSS Minification: What Gets Removed and Why It Matters

CSS minification removes whitespace, comments, and redundant syntax to reduce file size. Here's what's actually happening under the hood and the gains you can expect.
Browse all guides →

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