CSS Minifier — Browser Developer Tool

Developer

CSS Minifier is a browser-based developer tool that removes css comments and unnecessary whitespace.

CSS Minifier

Runs in this browserInput is processed only in this browser. It is not sent to or stored on a server.

This removes comments and whitespace only. It does not perform advanced CSS transforms or compatibility checks.

CSS

Minified CSS

Next actions

JS Minifier HTML Formatter

What is it

CSS Minifier lets you paste code or strings and inspect the result immediately. It is useful for debugging, validation, and encoding tasks without server storage.

minified CSS = CSS - comments - redundant whitespace

How to use

1Paste the input.
2Choose a mode if available.
3Read and copy the result.

Reference

CSS Minifier — Browser Developer Tool Reference
Input	Result
sample	removes CSS comments and unnecessary whitespace

Sources & standards

MDN Web Docs: Client-side web APIs - MDN Web Docs
ECMAScript Language Specification - Ecma International

FAQ

Is CSS Minifier input sent to a server?

No. This tool runs in your browser and does not send input to a server.

Can I use CSS Minifier with sensitive values?

It runs in the browser, but avoid pasting tokens or passwords on shared devices or during screen sharing.