CSS Minifier & Beautifier
Minify and beautify CSS online. Reduce file size or make CSS readable again.
How to use: Paste CSS to minify it, or paste minified CSS to beautify it.
How to Minify and Beautify CSS
Paste your CSS into the input area. Click Minify to compress it by removing whitespace, comments, and redundant characters. Click Beautify to add proper indentation and line breaks for readability. The tool handles all valid CSS including media queries, keyframes, and custom properties.
CSS Optimization for Web Performance
Minified CSS loads faster, improving your site's Largest Contentful Paint (LCP) and overall page speed scores. For production websites, always serve minified CSS. During development, use beautified CSS for readability. Most build tools (Webpack, Vite, PostCSS) can automate this process.
Frequently Asked Questions
- How do I minify CSS online?
- Paste your CSS code and click Minify. The tool removes comments, whitespace, and unnecessary characters to produce the smallest possible CSS. Copy the result and use it in production.
- How much can CSS minification reduce file size?
- CSS minification typically reduces file size by 20–50% depending on the amount of comments and whitespace in the original. This directly improves page load times and Core Web Vitals scores.
- Does CSS minification change how styles work?
- No. Minification only removes unnecessary characters (whitespace, comments, redundant semicolons). The resulting CSS renders identically in all browsers. It is a safe, lossless optimization.