CSS Minifier
Minify your CSS code to reduce file size and improve load times. This tool removes unnecessary whitespace, comments, and applies various optimizations to make your CSS more efficient for production use.
Original Size:
0 bytes
Minified Size:
0 bytes
Savings:
0 bytes (0%)
About CSS Minification
Why Minify CSS?
Minifying CSS offers several benefits:
- Reduced file size, leading to faster page load times
- Lower bandwidth usage, saving resources for both server and user
- Improved website performance and user experience
- Decreased time to first meaningful paint
Example: Before and After Minification
Original CSS:
/* Navigation styles */
.navigation {
background-color: #ffffff;
padding: 20px;
margin: 0 auto;
width: 100%;
}
.navigation ul {
display: flex;
list-style: none;
}
/* List items in the navigation */
.navigation ul li {
margin-right: 15px;
font-weight: bold;
color: #333333;
}
Minified CSS:
.navigation{background-color:#fff;padding:20px;margin:0 auto;width:100%}.navigation ul{display:flex;list-style:none}.navigation ul li{margin-right:15px;font-weight:700;color:#333}
Minification Techniques
- Removing Comments: Comments are helpful during development but unnecessary for browsers.
- Removing Whitespace: Spaces, tabs, newlines, and other whitespace are removed.
- Shortening Colors: #ffffff becomes #fff, rgb(0,0,0) becomes #000, etc.
- Shortening Zero Values: 0px becomes 0, margin: 0 0 0 0 becomes margin: 0, etc.
- Removing Last Semicolons: The last semicolon in each block is technically optional.
Best Practices
- Always keep a development (unminified) version of your CSS for editing
- Use the minified version only in production
- Consider using CSS preprocessors like Sass or Less for more maintainable code
- Implement CSS minification as part of your build process
- Use HTTP compression (Gzip or Brotli) in addition to minification for further size reductions
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