CSS Minifier & Beautifier
Minify CSS to reduce file size or beautify it with proper indentation. See before/after size stats instantly. Everything runs in your browser — nothing is sent to a server.
What Is CSS Minification?
CSS minification removes unnecessary whitespace, line breaks, and comments from your stylesheets without changing how they work. The result is a smaller file that loads faster in the browser. Minified CSS is commonly used in production websites to improve performance and reduce bandwidth usage. A typical stylesheet can be reduced by 20-50% through minification.
How to Use This Tool
Paste your CSS into the input area. Click Minify to compress it or Beautify to format it with clean indentation. The output appears below with size comparison stats showing the original size, output size, and percentage saved. Click Copy Output to copy the result to your clipboard.
Why Minify Your CSS?
CSS minification removes unnecessary whitespace, comments, and formatting from your stylesheets without changing functionality. Minified CSS files are typically 20-50% smaller, which directly improves page load speed, Core Web Vitals scores, and SEO rankings. Faster-loading pages also reduce bounce rates and improve user experience.
How to Use This CSS Minifier
Paste your CSS code into the editor and click Minify to compress it. You can also use the Beautify option to format minified CSS back into readable code with proper indentation — useful for debugging production stylesheets. The tool handles all valid CSS including media queries, animations, custom properties, and nested selectors.
All processing runs in your browser — your CSS code is never uploaded to any server.