Free CSS Minifier Online
Reduce CSS whitespace in your browser. The conservative minifier avoids rewriting quoted strings, but test the result before publishing.
Review minified output before deployment.
Private: your files are processed in your browser and are never uploaded to our server.
How to use
- Paste CSS.
- Select Minify CSS and review the output before using it.
CSS Minifier
Remove comments and reduce whitespace in ordinary CSS.
CSS minification is a lightweight transformation, not a full CSS parser. Test custom properties, unusual escapes, and complex data URLs after minifying.
Frequently asked questions
Does minification always reduce size?
Usually, but already-minified CSS may not shrink.
Is this a full CSS parser?
No. Always test output before production use.