CSS minifier

Minify CSS with a proper parser (CSSO).

Runs on your device

This tool runs in your browser. Your files and text are not uploaded.

Accepts: Paste text or open a file. Limits: Up to 25.0 MB.

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How to use CSS minifier

  1. Paste CSS.
  2. Select Minify.
  3. Copy or download.

Questions

Is it safe?

CSSO parses the CSS into a syntax tree before optimising, so it only makes changes that keep the same meaning. Invalid CSS is reported.

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