CSS Minifier & Compressor Tool

Compress and optimize your CSS code by removing unnecessary whitespace, comments, and characters. Improve website performance with our professional minification tool.

Code Compression
Performance Boost
Copy Results

CSS Input

Paste your CSS code or upload a file to minify

Paste your CSS code here. Supports all valid CSS syntax.

Minified CSS

Your compressed CSS code and statistics

Minify your CSS code to see results

Code Compression

Remove unnecessary whitespace, comments, and formatting to reduce file size

Performance Boost

Faster page load times and improved website performance

Before/After Stats

View compression statistics and compare original vs minified code

Understanding CSS Minification & Web Performance

What is CSS Minification?

CSS minification is the process of removing unnecessary characters from CSS code without changing its functionality. This includes whitespace, comments, and other non-essential elements that are not required for the browser to interpret the styles correctly.

What Gets Removed:

  • Whitespace: Spaces, tabs, and line breaks
  • Comments: /* */ style comments
  • Semicolons: Unnecessary semicolons
  • Colors: Optimize color values (optional)

Performance Benefits

Minifying CSS files can significantly improve website performance by reducing file sizes and improving load times. This is especially important for mobile users and visitors with slower internet connections.

File Size Reduction
30-70% smaller
Load Time Improvement
Faster rendering
Bandwidth Savings
Reduced data usage
SEO Benefits
Better Core Web Vitals

CSS Minification Best Practices

Development Workflow

  • Keep original CSS readable during development
  • Minify CSS as part of your build process
  • Keep both minified and unminified versions
  • Use source maps for debugging minified code

Production Optimization

  • Enable GZIP compression on your server
  • Set appropriate cache headers
  • Use CDNs for better performance
  • Test on mobile devices and slow connections

CSS Optimization Tools & Techniques

Build Tools

  • Webpack: CSS minification plugins
  • Gulp: CSS minification tasks
  • Parcel: Built-in CSS optimization
  • Vite: Lightning-fast CSS processing

Advanced Techniques

  • CSS-in-JS: Runtime optimization
  • CSS Variables: Dynamic theming
  • Critical CSS: Above-the-fold optimization
  • PurgeCSS: Remove unused CSS