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CSS Formatter & Beautifier

Format, beautify, and minify CSS instantly. Paste compressed CSS to get clean, indented stylesheets — runs entirely in your browser.

Input
Output
About This Tool
The CSS Formatter & Beautifier is a free online tool that converts compressed or unreadable CSS into clean, properly indented stylesheets. It handles all standard CSS features including media queries, pseudo-classes, keyframe animations, custom properties (--variables), and nested selectors.
The minify mode removes all comments and unnecessary whitespace, producing the smallest possible valid CSS for production deployment. All processing happens locally in your browser — no CSS is ever sent to a server.
How to Use
  1. Paste your CSS into the Input panel on the left.
  2. Select your preferred indentation (2 or 4 spaces).
  3. Click Fmt to format, or Min to minify.
  4. Click Copy to copy the result to your clipboard.
Use Cases
Front-end developers use this tool to format CSS copied from browser DevTools, legacy stylesheets, or design system exports. The minify feature is essential for reducing CSS bundle size in production, often cutting file size by 30–50%. It's also useful for formatting CSS-in-JS output and third-party CSS libraries for inspection.
FAQ
  • Does it support SCSS/LESS? — This tool formats standard CSS only. For SCSS or LESS, use a dedicated preprocessor formatter.
  • Are comments preserved? — During formatting, comments are preserved. The minify mode removes all comments to reduce file size.
  • Is my data safe? — All processing is local in your browser. No CSS is ever transmitted to any server.