CSS minifier

Remove comments and extra whitespace from CSS to make the file smaller.

🔒 Everything runs in your browser. Nothing you choose or type is uploaded. How to verify

How to use it

Paste your CSS.
Select Run.
Copy the minified CSS and check the size saving.

Handy for

Shrinking small stylesheets and inline styles.

Good to know

This tool does not merge rules or shorten colors, so savings are modest compared with build tools. It never changes selectors such as a :hover.

Privacy: where the work happens

Everything you enter or choose is processed by JavaScript in your browser and never sent anywhere. Only the page code, and any library this tool needs, is downloaded from cdnjs or jsDelivr.

Questions

Is it safe for all CSS?

It keeps strings and calc() spacing intact and only removes whitespace and comments. Always test the result on your site.

Does it rename anything?

No. Class names and values are unchanged.