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CSS Minifier

Compress stylesheets to ship less CSS over the wire — without a build tool or a signup.

Free foreverNo uploadsNo account
Input CSS
Minified Output
Suggested next steps

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Your privacy matters

All files are processed locally in your browser. Nothing is uploaded to our servers, so your documents remain private and secure.

01 · Real-world fits

Common use cases

  • Pasting into WordPress, Squarespace, or Shopify custom-CSS boxes that have character limits
  • Reducing CSS payload on landing pages before deploying to Vercel, Netlify, or Cloudflare Pages
  • Cleaning up messy exports from Figma, Webflow, or Framer
  • Compressing theme CSS for faster first-paint on static sites
  • Trimming style blocks for AMP pages where byte budgets are strict
02 · The honest pitch

Why CSS Minifier?

clean-css-grade compression running in your browser — the same optimization webpack and esbuild pipelines apply, but available for one-off snippets with no tooling required. Tweak aggressiveness per file rather than inheriting a global config.

CSS Minifier keeps the job narrow: compress stylesheets to ship less css over the wire — without a build tool or a signup. It is built for the small but frequent moments when opening a heavyweight editor, installing a package, or uploading sensitive work to a random service is more friction than the task deserves.

03 · Edge cases

Frequently asked questions

No. Minification is purely syntactic — whitespace removal, shorthand conversion, and duplicate elimination. Every rule stays intact.