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CSS Minifier

Minify CSS for faster page loads.

About CSS Minifier

CSS Minifier is a free online tool. Minify CSS to shrink stylesheets and speed up page loads. It runs entirely in your browser, so there is nothing to install, no account to create and no watermark added to your result.

How to use CSS Minifier

  1. Paste your code or data into the input box.
  2. Choose an option or press the action button.
  3. Read the result, fix any reported error and copy the output.

Worked example

Enter a short sample first to see how CSS Minifier behaves, check the result, then run your real content.

Tips for best results

  • Test the minified file on your site before replacing the original.
  • Everything runs in your browser, so you can use CSS Minifier even on a slow connection once the page has loaded.

Limits to keep in mind

  • The tool works on the text you paste and does not check it against a schema. Always test the output in your own project.

Frequently asked questions

Can I use this for production code?The tools follow common standards, but always test the output in your own project before deploying it.
Is CSS Minifier free?Yes. It is completely free with no signup, no watermark and no daily limit.
Do you store my files or text?No. Processing happens on your device in your browser, so your content is never uploaded to our servers.
Does it work on mobile?Yes. It works on current versions of Chrome, Safari, Firefox and Edge on phones, tablets and computers.

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