Format, minify, and beautify CSS instantly. Sort properties, fix indentation, syntax highlighting. Puro client-side.
This free online CSS formatter lets you beautify, minify, and validate CSS code instantly. Whether you need to clean up minified CSS from production, format messy styles for readability, or compress CSS for faster page loads, this tool handles it all. All processing happens entirely in your browser — your code never leaves your device, ensuring complete privacy and security.
A CSS formatter is a tool that takes unstructured or minified CSS code and restructures it with proper indentation, line breaks, and consistent spacing. This makes stylesheets easier to read, debug, and maintain.
Minify mode removes unnecessary whitespace, comments, and extra characters from your CSS to produce the smallest possible file size. This is ideal for production websites where faster loading times matter.
Validate mode checks your CSS for basic syntax errors such as unmatched braces, unclosed strings, and invalid structure. It helps catch common mistakes before deployment.
No. All formatting, minifying, and validating operations are performed entirely in your browser using JavaScript. Your CSS code is never transmitted to any server or stored anywhere.
Yes. Once the page is loaded, all operations work locally in your browser. No internet connection is required after the initial page load.
In Format mode, CSS comments are preserved and properly indented. In Minify mode, comments are removed as part of the compression process to achieve maximum file size reduction.
You can choose between 2 spaces, 4 spaces, or tab characters for indentation. This lets you match your team's or project's coding style preferences.
Yes. After processing, click the Download button to save the result as a .css file with proper MIME type. This is useful for archiving or importing into your project.