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CSS Minifier

Minify CSS code by removing whitespace, comments, and redundant code. Optimize stylesheets for production.

How to Use CSS Minifier

  1. Paste your CSS code into the input field
  2. Click the "Minify CSS" button
  3. View the size reduction statistics
  4. Copy the minified code or download as a file

What Does CSS Minification Do?

  • Removes Comments - Strips out all CSS comments that are only needed during development
  • Eliminates Whitespace - Removes unnecessary spaces, tabs, and newlines
  • Removes Redundant Semicolons - Eliminates the last semicolon before closing braces
  • Optimizes Selectors - Removes extra spaces around CSS selectors and properties

Benefits of CSS Minification

  • Faster Page Load - Smaller CSS files mean faster download and parsing times
  • Reduced Bandwidth - Lower server costs and better performance for users on slow connections
  • Better Render Performance - Faster CSSOM construction leads to quicker page rendering
  • Improved Core Web Vitals - Better First Contentful Paint (FCP) and Largest Contentful Paint (LCP) scores

CSS Minification Best Practices

  • Always keep unminified source files for future editing
  • Use source maps in development to debug minified CSS
  • Combine multiple CSS files before minifying for fewer requests
  • Consider using Gzip compression alongside minification
  • Automate minification in your build pipeline

When to Minify CSS

  • Before deploying to production environments
  • As part of your build process or CI/CD pipeline
  • When optimizing website performance
  • For critical CSS that blocks rendering

Privacy & Security

All processing happens entirely in your browser. Your CSS code is never sent to any server, ensuring complete privacy and security of your stylesheets.