Compress your CSS code to reduce file size and improve page load speed. Our free online CSS Minifier removes unnecessary whitespace, comments, and characters instantly.
Why Minify CSS?
When you write CSS, you use spaces, indentation, and comments to make it readable for humans. However, browsers don't need these formatting extras—they just need the rules. Minification is the process of stripping out this "dead weight" to create the smallest possible file.
Smaller CSS files download faster, use less bandwidth, and improve your website's performance scores (like Google PageSpeed Insights). It's a critical step in modern web deployment.
Key Benefits
🚀 Faster Load Times
Reduce file size by 20-40%, leading to quicker rendering and a better user experience.
📉 Bandwidth Savings
If you have high traffic, saving a few kilobytes per visitor adds up to massive bandwidth reduction.
🧹 Comment Stripping
Automatically removes all comments (/* ... */) from your production code.
⚡ Instant Processing
Runs directly in your browser. No upload limits, no server waiting time.
How to Minify
- Input CSS: Paste your stylesheet into the input area.
- Minify: Click the "Minify CSS" button.
- Copy: The tool generates a single line of compressed CSS code. Copy and save it as
style.min.css.
Optimization Example
Before (Source)
/* Main Header */
body {
margin: 0;
padding: 0;
font-size: 16px;
}
After (Minified)
body{margin:0;padding:0;font-size:16px}
Frequently Asked Questions
Does it break my layout?
No. The minified code is functionally identical to your original code. The browser interprets body{margin:0} exactly the same as the expanded version.
Can I un-minify it later?
Minification is technically a one-way street regarding comments (they are lost forever), but you can use a "CSS Beautifier" to re-format the code structure for readability.