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🎨 CSS Validator

Validate CSS stylesheets for syntax errors, browser compatibility, and performance

Enter the URL to analyze all CSS files from the webpage
Paste your CSS code to validate

About CSS Validation

CSS validation ensures your stylesheets follow web standards and best practices. This tool checks for:

  • Syntax Errors: Missing semicolons, unmatched braces, invalid properties
  • Browser Compatibility: Vendor prefixes and cross-browser support
  • Performance: File size optimization, efficient selectors
  • Best Practices: Shorthand properties, avoiding !important overuse
  • CSS3 Features: Modern CSS usage and fallbacks

Why Validate CSS?

  • Ensure consistent styling across browsers
  • Improve website loading performance
  • Maintain clean and professional code
  • Better search engine optimization
  • Easier debugging and maintenance