Skip to content
Runs in your browser Free, no sign-up

CSS Minifier

Compress CSS code by removing comments and whitespace

Loading tool workspace...

What is CSS Minifier?

CSS Minifier compresses CSS code by removing unnecessary whitespace, line breaks, and comments.

How to use CSS Minifier

Paste CSS into the input panel and click Minify CSS to compress code.

Key features

  • Minifies CSS files
  • Calculates byte size savings

Common use cases

  • Optimizing production CSS assets

Technical details & standards

Strips formatting and comments client-side.

Frequently asked questions

Does minification alter CSS rules?

No, styling rules remain identical.

Is my data safe?

All processing happens entirely in your browser. Your data never leaves your device and is never sent to or stored on a server.

Does it work offline?

Yes. Once the page has loaded, most tools keep working without an internet connection.

More formatters & viewers tools

View all