You are responsible for key management and output validation.
CSS Minifier & Formatter
Minify or beautify CSS in your browser. Comments, whitespace, and license blocks are handled safely. Nothing is uploaded.
26.9% smaller
Result
Frequently Asked Questions
Does the tool upload my CSS?
No. Minifying and formatting run entirely in your browser. You can confirm by opening DevTools → Network and watching for requests while pasting.
What does the minifier do?
It removes comments and redundant whitespace, drops the last semicolon of each rule, and preserves string literals and url() values. License comments are kept when the option is enabled.
Can I beautify already-minified CSS?
Yes. Switch to Beautify mode and paste minified CSS — rules, properties, and nested blocks are re-indented for readability.
Related Tools
Your inputs remain on your device.