CSS Minifier
Developer ToolsMinify CSS code to reduce file size. Remove whitespace, comments, and optimize rules.
How to use CSS Minifier
- 1Enter your input in the text area above
- 2Click the action button to process your data
- 3View the result and copy it to your clipboard
Common Use Cases
Quick Processing
Process your data quickly and efficiently.
Secure & Private
All processing happens in your browser.
Free to Use
This tool is completely free with no signup.
Mobile Friendly
Works on any device with a browser.
Frequently Asked Questions
How much can CSS minification reduce file size?
Typical CSS minification reduces file size by 20-40%. It removes: whitespace, line breaks, comments, semicolons (where optional), and unnecessary brackets. Advanced optimization includes: merging duplicate selectors, shorthand properties, and removing vendor prefixes.
Does minification break CSS?
No. Our minifier is safe and preserves all functionality. It only removes non-essential characters and applies safe optimizations. Your CSS will look different but behave identically. We also provide before/after size comparison.
Can I reverse minification?
Minification is lossy (comments and whitespace are removed permanently), but you can use our CSS Beautifier to reformat minified CSS for readability. However, original comments cannot be recovered. Always keep your unminified source.
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