CSS Minifier
Minify CSS to reduce file size by removing whitespace and comments.
CSS Input
Minified Output
About CSS Minifier
CSS Minifier removes all unnecessary characters from your CSS — whitespace, comments, newlines, and redundant semicolons — producing the smallest possible file that functions identically to the original. Smaller CSS files mean faster page loads and better performance scores.
Paste your stylesheet and instantly see the minified output along with the original size, minified size, and percentage saved. This is particularly useful before deploying to production when you're not using a build tool like Webpack or Vite that automatically minifies assets.
The minifier preserves all valid CSS rules while eliminating everything that browsers don't need to parse and render correctly.
Features
- ✓Removes whitespace, comments, and unnecessary semicolons
- ✓Shows original vs minified size and bytes saved
- ✓One-click copy of minified output
- ✓Preserves all functional CSS rules
- ✓Works with CSS3, media queries, and custom properties
Common Use Cases
- →Minifying stylesheets before deployment
- →Reducing CSS payload size for performance optimization
- →Preparing CSS for inline embedding in HTML
- →Shrinking third-party stylesheets you're self-hosting