Is CSS / JS Minifier free?

Yes, CSS / JS Minifier is completely free to use with no signup required.

Does CSS / JS Minifier send my data to a server?

No. CSS / JS Minifier runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

What is CSS / JS Minifier used for?

Minify CSS or JavaScript by stripping comments and whitespace, safely preserving line breaks for ASI-reliant code. Runs offline.

DevTab

CSS / JS Minifier

Never leaves your browser

Strip comments and redundant whitespace from CSS or JavaScript client-side.

Conservative minifier: strips comments and redundant whitespace, preserves line breaks so ASI-reliant JS stays correct. Not a full mangler — for maximum compression on production builds, pair with your bundler's minifier.

Input (CSS)

Minified Output

Minified141 B199B → 141B (-29%)