Free Online CSS Formatter
Format, beautify, and minify CSS code instantly. Supports syntax highlighting and local browser processing.
style Input CSS
code Output Result
Key Features
Syntax Highlighting
Color-coded CSS selectors, properties, values, and at-rules for better readability and error detection.
Smart Indentation
Intelligent token-based formatting that respects nested at-rules, composite selectors, and inline critical styles.
Instant Processing
All operations run locally in your browser for instant results with no server roundtrips.
Privacy Protected
Your CSS code never leaves your browser. No server storage or tracking.
Frequently Asked Questions
Getting Started
What is a CSS formatter?
A CSS formatter takes raw or minified CSS and rewrites it with consistent indentation, spacing, and line breaks so it is easy to read and edit. It supports media queries, keyframe animations, and nested at-rules.
Is this CSS formatter free?
Yes. All tools are completely free and run locally in your browser. No signup, no limits, no hidden costs.
Does the tool store my code?
No. Your CSS code never leaves your browser. All processing happens locally on your device.
Features & Usage
How do I format CSS?
Simply paste your CSS into the input area and click the "Format CSS" button. The tool will add proper indentation and line breaks automatically.
Does this tool handle CSS custom properties?
Yes, custom properties (--var-name) are preserved as-is. The formatter only adjusts whitespace and indentation without modifying property names or values.
What about @media and @keyframes blocks?
At-rules like @media, @keyframes, @supports, and @container are properly indented with their nested rules for easy navigation.
Troubleshooting
Can I use this for SCSS or LESS?
This tool targets standard CSS3 syntax. SCSS/LESS features like variables ($), mixins, and nesting may not format correctly. Use a dedicated preprocessor formatter for those.
Can I use this tool offline?
Yes! Once you've visited the page, all functionality works offline thanks to service workers and local processing.