CSS Minifier
Minify or beautify CSS instantly. See compression stats, copy or download. 100% client-side.
Privacy: All minification uses CSSO in your browser. No data is sent to any server.
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Frequently Asked Questions
What does CSS minification do?
CSS minification removes whitespace, comments, and unnecessary characters from your CSS code to reduce file size. This improves page load speed and Core Web Vitals scores.
Will minifying CSS break my styles?
No. CSSO performs safe structural optimization. It removes redundancy without changing the visual output. CSS variables, media queries, and modern syntax are fully supported.
What is the difference between minify and compress?
Minification removes unnecessary characters from source code. Compression (gzip/brotli) is a server-level encoding that further reduces transfer size. Both should be used together for best performance.
Is my data secure?
Yes. All minification happens in your browser using CSSO. No data is sent to any server.