DEVELOPER TOOL · FREE & PRIVATE
CSS Minifier
Minify CSS code by removing comments and unnecessary whitespace directly in your browser.
✓ Free to use✓ No sign-up✓ Runs in your browser
CSS Minifier
Minify CSS code by removing comments and unnecessary whitespace directly in your browser.
QUICK GUIDE
How to use CSS Minifier
Paste CSS, click Minify CSS, then copy or download the result. Review the output before using it in production.
Privacy first
Processing happens in your browser. No account or server upload is required.
GOOD TO KNOW
Frequently Asked Questions
What does CSS minification remove?
It removes unnecessary whitespace and other removable syntax details to make CSS more compact.
Will minifying automatically optimize my entire website?
No. Minification reduces CSS source size; it does not replace performance testing or remove every unused rule.
Should I keep my original CSS file?
Yes. Keep the readable source for editing and debugging, and test the minified output before deployment.
Can I copy the minified result?
Yes. Paste CSS, run Minify CSS and copy or download the resulting code.