CSS Minifier - Compress CSS Code Free
Last updated: 2026-03-15
Your CSS is 45KB. After minification: 28KB. That is 38% smaller, meaning faster page loads.
What Minification Removes
| Element | Before | After | Savings |
|---|---|---|---|
| Whitespace | Indentation, line breaks | Single line | 15-25% |
| Comments | /* descriptions */ | Removed | 5-15% |
| Zero units | 0px, 0em | 0 | 1% |
| Color shorthand | #ffffff | #fff | 1% |
When to Minify
- Production deployment - always
- Performance optimization
- Email templates
When NOT to Minify
- During development - keep readable
- Debugging - use unminified version
Minify your CSS - free, instant.
Open CSS Minifier →Related Tools
According to web.dev, minifying CSS is a core performance optimization.
As Lighthouse flags, unminified CSS affects page load speed.