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CSS Minifier

Minify and optimize CSS stylesheets to reduce file size and improve load speed.

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CSS Input

Minified CSS Output

Minified CSS will appear here.

Why Minify CSS?

CSS minification removes all unnecessary characters from your stylesheets — whitespace, newlines, comments, and redundant rules — without changing the visual output. The result is a smaller file that browsers download and parse faster.

Our CSS minifier uses clean-css with Level 2 optimizations, which can also merge duplicate selectors, shorten color codes, and remove overridden properties — achieving significantly better compression than simple whitespace removal.

CSS Minifier FAQ

Does minified CSS still work the same? +
Yes. Minified CSS is functionally identical to the original. Browsers don't need the whitespace or comments — they only need the actual CSS rules.
Can I minify SCSS or SASS? +
This tool works with compiled CSS only. You'll need to compile your SCSS/SASS to CSS first (using your build pipeline), then paste the compiled CSS here for minification.
How much smaller will my CSS get? +
Most CSS files achieve 20–40% reduction with basic minification. With Level 2 optimizations (merging rules, shortening values), you can often achieve 30–60% reduction on complex stylesheets.