CSS Minifier
Minify CSS code to reduce file size and improve website performance. Free online CSS minifier with advanced optimization options.
Fast Performance
Reduce CSS file size by 20-40% to improve page load times and performance.
Advanced Optimization
Optimize colors, remove comments, and compress code with configurable options.
100% Private
All minification happens in your browser. Your CSS never leaves your device.
How to Use the CSS Minifier
Paste Your CSS
Copy and paste your CSS code into the text area, or click "Load Sample CSS" to try it with example code.
Configure Options
Select your preferred minification options like removing comments, optimizing colors, and removing unnecessary semicolons.
Minify and Download
Click "Minify CSS" to compress your code. View compression statistics, then copy or download the minified CSS.
Frequently Asked Questions
What is CSS minification?
CSS minification is the process of removing unnecessary characters from CSS code (like whitespace, comments, and line breaks) without changing its functionality. This reduces file size and improves page load times.
How much can I reduce my CSS file size?
Typically, CSS files can be reduced by 20-40% through minification. Files with many comments and whitespace can see even greater reductions. Our tool shows you exact compression statistics.
What optimizations does this tool perform?
Our CSS minifier removes comments, optimizes color codes (e.g., #ffffff to #fff), removes unnecessary semicolons, eliminates extra whitespace, and optimizes shorthand properties like margin and padding.
Is minified CSS safe to use in production?
Yes! Minified CSS is functionally identical to the original. It's a best practice for production websites as it reduces bandwidth usage and improves loading speed without affecting functionality.
Can I minify CSS with media queries and animations?
Absolutely! Our minifier handles all CSS features including media queries, keyframe animations, pseudo-classes, and modern CSS syntax while preserving all functionality.
Is my CSS code private?
Yes, 100% private. All minification happens in your browser. Your CSS code never gets sent to any server, ensuring complete privacy and security.