CSS Minifier Online - Free CSS Compressor & Optimizer

CSS Minifier Online

Free CSS compressor · No server upload

Input CSS
Minified Output
(Output will appear here)

How to use the CSS Minifier

Paste any CSS code and click Minify. Whitespace, comments, and unnecessary characters are removed to reduce file size — critical for production websites. All processing is 100% client-side.

Why minify CSS?

Every byte matters for page speed. Google uses page load time as a ranking factor. Minified CSS can reduce file size by 30-60%, resulting in faster loading and better Core Web Vitals scores.

FAQ

Is my CSS stored?No, all processing happens in your browser. Nothing is transmitted.
Does it break my CSS?No, minification only removes non-essential characters. Your CSS will work identically.