CSS Minifier
Minify your CSS code to reduce file size. Removes comments, extra whitespace, and unnecessary characters.
About the CSS Minifier — Minify CSS Online for Free
Minify CSS code instantly to reduce file size and improve page load speed. Remove comments, whitespace, and unnecessary characters. Free, private, browser-based CSS minifier.
Why client-side?
Every byte you paste, type, or upload here is processed entirely inside your browser. Nothing is sent to a server, logged, or stored. That means it's safe to use this tool on production secrets, customer data, internal logs, and any input you would not paste into a hosted SaaS formatter.
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Frequently Asked Questions
- What does CSS minification do?
- CSS minification removes comments, extra whitespace, newlines, and unnecessary characters from your CSS code, producing a smaller file that loads faster in browsers.
- Will minifying CSS break my styles?
- No. Minification only removes formatting and comments — it does not change the meaning of your CSS rules. Your styles will render identically.
- How much can CSS minification save?
- Typical savings range from 20% to 50% depending on how much whitespace and comments your original CSS contains. The tool shows the exact savings percentage.
- Is this CSS minifier private?
- Yes. All minification happens locally in your browser. Your CSS code is never uploaded to any server.