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Web Development · Free online tool

CSS Minifier

Compress basic CSS by removing comments and redundant whitespace.

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Ready to use Processes locally in your browser
Compact CSS
No upload is required for these text tools.

How to use CSS Minifier

Best for ordinary stylesheets. Always test the generated CSS before production use, especially complex custom properties and embedded strings.

  1. Type or paste your input into the editor.
  2. Adjust available options, then choose Minify CSS.
  3. Review the result and copy or download it if useful.

Who is this tool for?

Students, developers, designers and anyone who works with web development can use this tool to quickly test concepts without installing a full development environment.

Privacy and safety

Processing for this tool happens inside your browser, and CodingPremise does not receive the text you enter through a server-side processing endpoint. Your browser may still contact our hosting service to load this page. Avoid pasting passwords, private API credentials, or other sensitive information into websites you do not control.