🎨 CSS Formatter

Online CSS beautifier and minifier

Output Result

📚 User Guide

Features

  • Beautify: Add indentation and line breaks, make CSS more readable
  • Minify: Remove spaces, line breaks and comments, reduce file size

Beautify Example

Compressed CSS:

.container{margin:0 auto;padding:20px;}.header{background:#333;color:#fff;}
                

After beautify:

.container {
  margin: 0 auto;
  padding: 20px;
}

.header {
  background: #333;
  color: #fff;
}
                

Minify Techniques

  • Remove all spaces and line breaks
  • Remove comments
  • Simplify color values (#ffffff → #fff)
  • Remove unnecessary units (0px → 0)
  • Merge same rules

Use Cases

  • Development: Use beautified format, easy to read and maintain
  • Production: Use minified format, reduce file size
  • Code Review: Easier to find issues after beautify
  • Learning: Beautify before analyzing others' code

Performance Optimization

  • Always minify CSS in production
  • Use Gzip or Brotli for further compression
  • Consider using CSS preprocessors (Sass, Less)
  • Use PostCSS for automation

Best Practices

  • Keep code formatted during development
  • Use consistent indentation (2 or 4 spaces)
  • Organize selector order properly
  • Add necessary comments
  • Auto minify during build