Advanced client-side CSS beautify and compression tool. Format messy CSS with proper indentation or minify it for production — instantly, privately, and 100% in your browser.
FreeNo UploadClient-Side Only
CSS Input
Drag & drop your CSS file here
or browse files from your device · .css up to 200 KB
Validating CSS...0%
CSS Processed Successfully
Output
How To Format & Minify CSS
1
Paste or Upload CSS
Enter your CSS code directly in the textarea or drag and drop a .css file from your device.
2
Click Beautify to Format
Press Beautify to restructure your CSS with proper indentation, spacing, and clean rule grouping.
3
Click Minify to Compress
Press Minify to strip whitespace, comments, and redundant characters for smaller file sizes.
4
Preview the Result
Review the formatted or minified CSS output in the scrollable preview area with size and rule statistics.
5
Copy to Clipboard
Use the copy button to instantly copy the entire processed CSS to your system clipboard with a single click.
6
Download CSS File
Download the result as a .css file directly to your device for immediate use in your projects.
Frequently Asked Questions
The CSS Formatter (Beautifier) takes messy, minified, or unstructured CSS code and restructures it with proper indentation, consistent spacing between selectors and properties, and clean brace alignment. This makes the stylesheet significantly easier to read, debug, and maintain.
The CSS Minifier removes all unnecessary characters from your CSS code — including extra whitespace, line breaks, comments, trailing semicolons, and redundant spaces. This produces a compact stylesheet that loads faster in browsers, typically reducing file size by 25-45%.
No. The minifier only removes characters that have no effect on how browsers parse and apply styles — whitespace, comments, and unnecessary formatting. All selectors, properties, values, and @-rules are preserved exactly as written. String values inside content properties and url() functions are also protected.
When enabled, this option performs additional optimizations during minification: it removes trailing semicolons before closing braces, collapses multiple spaces to one, removes unnecessary spaces around colons and semicolons in declarations, and strips empty rulesets that contain no properties.
The tool is designed for standard CSS syntax. It can format plain CSS that was extracted from SCSS, LESS, or other preprocessors after compilation. However, it does not parse or understand preprocessor-specific syntax like variables ($var), nesting, or mixins — those should be compiled to CSS first.
Yes. The beautifier correctly indents nested rules inside @media, @keyframes, @supports, @font-face, and other at-rules. Each nested level gets additional indentation so the structure is clearly visible. The minifier handles these correctly as well.
No, never. All CSS formatting and minification happen entirely within your browser using JavaScript. No data is transmitted, uploaded, or stored on any server. You can verify this by disconnecting from the internet — the tool will still work perfectly.
The tool supports CSS input up to 200,000 characters. This covers the vast majority of real-world stylesheets including large framework CSS files, design system outputs, and compiled component libraries. Larger files may experience slower processing depending on your device.
Typical CSS minification achieves 25-45% file size reduction depending on the original code. Well-formatted CSS with lots of indentation, comments, and spacing will see higher savings. Already-minimal CSS will see smaller reductions. The tool displays the exact bytes saved after each minification.
Yes. The tool is fully responsive and optimized for mobile browsers. The layout switches to a single-column view on smaller screens, textareas use large touch-friendly controls, all buttons expand to full width on mobile, and the output area scrolls internally to prevent horizontal page scrolling.
All CSS formatting and minification are performed entirely in your browser. No data is uploaded or stored.
Format and minify CSS instantly — clean, optimized, and 100% client-side.
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