CSS Minifier - Compress CSS Code Online Free Tool
Minify and compress CSS code to reduce file size. Remove whitespace, comments, and optimize CSS for faster website loading. Free CSS minification tool.
CSS Minifier
Optimization Features
What Gets Removed
- • Comments and documentation
- • Unnecessary whitespace and line breaks
- • Trailing semicolons before closing braces
- • Empty CSS rules
- • Redundant spaces around operators
What Gets Optimized
- • Hex color codes (6-digit to 3-digit)
- • Zero values (0px → 0)
- • Decimal numbers (0.5 → .5)
- • Font family quotes (when safe)
- • Property value formatting
Advanced Compression
Remove comments, whitespace, and optimize values.
Faster Loading
Smaller CSS files load faster and improve performance.
Safe Processing
All processing happens locally in your browser.
Compression Stats
See exactly how much space you saved.
Frequently Asked Questions
CSS minification is the process of removing unnecessary characters from CSS code without changing its functionality. This includes removing whitespace, comments, and optimizing values to reduce file size.
Minified CSS files are smaller, which means faster download times, reduced bandwidth usage, and improved website performance. This leads to better user experience and SEO rankings.
No, proper minification only removes unnecessary characters and optimizes values while preserving the CSS functionality. Our tool is designed to safely minify CSS without breaking it.
Compression ratios vary depending on your CSS code style. Well-formatted CSS with comments can often be compressed by 20-60%. The actual savings depend on the amount of whitespace and comments.
Yes, always use minified CSS in production environments. Keep the original, readable version for development and use the minified version for your live website to optimize performance.