CSS Minifier
Minify CSS by removing comments and unnecessary whitespace to shrink stylesheet size. Runs entirely client-side — nothing is uploaded.
Markup too? HTML minifier · scheduled deploys: Cron parser · px → rem: px to rem.
Ship leaner stylesheets
Minified CSS downloads faster and reduces render-blocking time. Keep a readable source copy and minify a production build before deploying.
FAQ
What does the CSS minifier do?
It tokenizes the stylesheet, removes ordinary comments and redundant whitespace, and keeps strings, custom-property values, calc() operator spacing, license comments, and source-map comments intact.
Is the output safe to deploy?
The tool validates balanced strings, comments, brackets, and blocks before producing output. Always test generated CSS, especially browser-specific hacks.
Does it work offline?
Yes. The minifier runs in your browser and never uploads your stylesheet.
Last updated: