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CSS minification is a crucial web performance optimization technique that removes unnecessary characters from CSS files without changing their functionality. This process significantly reduces file sizes, leading to faster page load times, improved user experience, and better SEO rankings.
Whether you're a web developer optimizing site performance, a designer fine-tuning your website, or someone trying to improve your Core Web Vitals scores, our free CSS minifier makes the process simple and efficient while maintaining CSS functionality.
Paste your CSS code directly into the editor or upload a CSS file. Supports all CSS syntax including media queries and keyframes.
Choose minification options like removing comments, whitespace, and optimizing colors to suit your needs.
Click 'Minify CSS Code' and download your optimized CSS with reduced file size.
Choose from various minification settings including comment removal, whitespace elimination, and color optimization.
Quickly apply conservative, balanced, or aggressive minification presets based on your needs.
View detailed compression statistics including file size reduction, character count, and line count.
All processing happens in your browser - your CSS code never leaves your device.
Minify CSS code in real-time with immediate preview of results.
No limits on file size or number of minifications. Completely free forever.
Our CSS minifier serves various purposes across different development scenarios and optimization needs:
Use the balanced preset for most projects to maintain a good balance between optimization and readability
Always test minified CSS in different browsers to ensure compatibility
Keep original CSS files for development and use minified versions only in production
Combine CSS minification with Gzip compression for maximum file size reduction
Use version control to track changes between original and minified CSS files
Consider using the aggressive preset for maximum compression when file size is critical
Minify CSS Now
Yes, completely free with no hidden costs or limitations.
No, minification only removes unnecessary characters and whitespace without changing functionality.
Yes, all processing happens locally in your browser.
All CSS features including media queries, keyframes, and vendor prefixes.
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