CSS Minifier and Beautifier

Optimize your CSS files for faster website loading by removing unnecessary whitespace, comments, and formatting while preserving functionality. This performance optimization tool reduces file sizes significantly, improving page load speeds and user experience. All processing occurs in your browser for privacy, making it essential for web developers focused on performance optimization, bandwidth reduction, and achieving better SEO rankings through improved site speed.
Size Reduction Comment Removal Beautify Option Instant Processing
Quick Examples 
BEFORE: body { margin: 0; }
AFTER: body{margin:0}
SAVINGS: Reduce file size by 30-50%
About CSS Minification

Minifying CSS removes unnecessary characters (spaces, comments, etc.) from CSS files to reduce their size, improving page load times.

Benefits of CSS Minification:
  • Reduced file size means faster downloads
  • Lower bandwidth usage for both server and client
  • Improved page load performance
  • Better caching efficiency
Pro Tip: Always keep a readable version of your CSS for development, and use the minified version in production.
Operation completed successfully!

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

How much can CSS minification reduce file size?
CSS minification typically reduces file size by 20-40%, depending on your coding style. Files with lots of comments, indentation, and whitespace see the biggest improvements. Even modest reductions improve page load speeds.
Will minifying CSS break my styles?
No, minification only removes whitespace, comments, and unnecessary characters while preserving all functionality. Your CSS will work exactly the same but load faster. Always keep a backup of your original formatted CSS for editing.
Should I minify CSS for development or only production?
Use formatted CSS during development for easier debugging and editing. Minify CSS only for production deployment to improve website performance. Many build tools can automate this process.
Can I minify CSS frameworks like Bootstrap?
Yes, but most popular frameworks already provide pre-minified versions. If you have customized framework CSS or combined multiple files, minification can still provide additional size reductions.
Does minified CSS affect SEO or Core Web Vitals?
Yes, faster-loading CSS improves page load speeds, which positively impacts Core Web Vitals and SEO rankings. Smaller CSS files mean faster rendering and better user experience, especially on mobile devices.

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