CSS Minifier

Minify stylesheets by removing comments, whitespace and last semicolons, with a before/after size report. Safe, local and instant — no build pipeline required.

100% free No uploads Runs in your browser No signup

CSS minifier

Minification removes comments, whitespace and trailing semicolons — the same transformations production pipelines (cssnano, clean-css) apply, done instantly on your machine. Values, selectors and media queries are untouched, so the output is safe to use anywhere the input was.

How to use the CSS Minifier

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

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