CSS Formatter & Validator
Format, validate, and optimize your CSS with advanced options.
Settings
Layout & output
Edit the input and the formatter updates automatically.
Rules & validation
Auto-format is on by default. Use Ctrl+Enter to format manually.
Input
Output
Statistics
Lines
0
Columns
0
Input Size
0 B
Output Size
0 B
Processing Time
0ms
Validation & Diagnostics
No diagnostics yet
Click any issue below to move the caret in the input.
Format your Css to see diagnostics
About CSS Formatter
The CSS Formatter helps you write clean, consistent, and optimized CSS code. Choose from multiple formatting styles and validation options.
Key Features
- Multiple output formats (expanded, compact, compressed)
- Automatic property sorting
- Vendor prefix injection
- CSS validation with detailed reports
- Code validation
- Support for latest css features
Tips
- Use expanded format for development
- Use compressed for production
- Enable validation to catch syntax errors
- Sort properties for consistency