CSS Beautifier

CSS Beautifier — Format Minified CSS for Readability Online

The CSS Beautifier is a free online tool that converts minified or messy CSS into clean, properly indented, easy-to-read code. Whether you are debugging a third-party stylesheet, learning from a production site's design, auditing a CSS bundle for bloat, or preparing a stylesheet for code review, beautification reveals the structure that minification hides — selectors, properties, media queries, and nested rules become visible at a glance.

Why Beautify CSS?

Production CSS is typically minified to shave kilobytes off page loads. The result is a single dense line where every selector, brace, and semicolon runs together with no whitespace. Reading minified CSS to find a bug or understand a layout is painful. Beautification adds back the line breaks, indentation, and spacing that make the file's structure obvious. You can quickly see which selectors apply to which elements, spot duplicate rules, identify oversized blocks, and review media query logic.

How to Use the Beautifier

Paste your minified CSS into the input box. Choose your indentation style (2 spaces, 4 spaces, or tabs). Click Beautify. The tool parses the CSS, applies modern formatting, and returns clean source you can copy with one click. It handles CSS3 features including flexbox, grid, custom properties (variables), @media, @keyframes, @supports, @import, and vendor prefixes correctly.

Common Use Cases

Front-end developers debug third-party stylesheets. Designers audit production CSS for refactoring opportunities. QA engineers verify build outputs. Students learn from open-source themes. Security analysts inspect suspicious styles. The tool is free, fast, mobile-friendly, runs entirely in your browser — your CSS stays private and never touches a server.

Tamer Baghdadi

CEO / Co-Founder