CSS Minifier

Minify CSS code online for free. Reduce file size and improve page speed.

✓ Free✓ No sign-up✓ Works in browser

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Original CSS0.3 KB

Minified

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How to Use This Tool

Paste Your CSS

Paste your CSS code into the left input panel. You can paste a full stylesheet or a small snippet.

Click Minify CSS

Click the Minify CSS button to compress your code. The size reduction percentage is shown immediately.

Copy the Minified Output

Click Copy to copy the minified CSS to your clipboard for use in your production website or CSS bundler.

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Frequently Asked Questions

How much does minifying CSS reduce file size?

CSS minification typically reduces file size by 20-40%. Files with many comments, long property names, or generous whitespace see the highest reductions.

Is minified CSS safe to use in production?

Yes, completely. Minifying CSS only removes characters that browsers ignore anyway — whitespace, comments, and redundant separators. The actual CSS rules are identical.

Should I minify CSS manually or use a build tool?

For production projects, use a build tool like webpack, Vite, or Parcel that minifies CSS automatically during the build process. Use this tool for quick one-off minification or testing.

What is the difference between CSS minification and compression?

Minification removes unnecessary characters from source code. Compression (like gzip or Brotli) compresses the resulting bytes further at the HTTP level. Both together produce the smallest possible file transfer size.

About CSS Minifier

Our CSS Minifier is a free, fast, and privacy-friendly tool that works entirely in your browser. No files are ever uploaded to our servers — all processing happens locally.

Unlike competitors that impose daily limits or require account creation, FreeToolKit gives you unlimited access with zero sign-up. Whether you are a developer, student, designer, or business professional, this tool is built to save you time.