CSS Minifier & Beautifier
Minify or beautify CSS code — reduce file size or improve readability.
How to Use CSS Minifier
Paste your CSS code
Choose Minify or Beautify mode
Copy the optimized output
Your files never leave your browser
No upload wait time. Results in seconds
No daily limits, no file count limits
No account, no subscription, no fees
About CSS Minification
CSS minification removes all unnecessary characters — comments, whitespace, newlines, and redundant semicolons — without changing how the stylesheet works. Smaller CSS files load faster, improving page speed and Core Web Vitals.
What Gets Removed
- Block comments
/* ... */ - Extra whitespace and line breaks
- Trailing semicolons before closing braces
- Unnecessary spaces around operators
Frequently Asked Questions
How much can CSS be minified?
Typical CSS files can be reduced by 20–40% through removing comments, whitespace, and unnecessary semicolons.
Does minifying break CSS?
No — minification only removes formatting. The CSS rules remain identical and function the same in all browsers.