CSS Minifier
Code Minification: Reduces file size by removing unnecessary whitespace, comments, and line breaks. Essential for improving website loading speed.
Supported: HTML5, CSS3, ECMAScript (ES5/ES6+) standards compliant
CSS Minifier removes unnecessary whitespace, comments, line breaks and optimizes properties to minimize file size. Improve website loading speed and save bandwidth.
How to Use
- 1
Paste your CSS code into the input area.
- 2
In Live mode, compression happens automatically.
- 3
Copy or download the compressed CSS.
- 4
Check compression rate and bytes saved.
Use Cases
Website Performance
Reduce CSS file size to improve stylesheet loading speed and rendering performance.
Bandwidth Savings
Save server bandwidth costs, especially when using large CSS frameworks.
Production Build
Minimize final CSS bundle size with build tools like Webpack or Vite.
Email Styling
Compress inline CSS to reduce overall HTML email size.
What is CSS Minification?
CSS Minification reduces file size by removing unnecessary characters and optimizing code while maintaining functionality.
Whitespace Removal: Removes unnecessary spaces, tabs, and line breaks between selectors, properties, and values.
Comment Removal: Removes all CSS comments (/* */).
Property Optimization: Shortens property values like color: #ffffff → color:#fff, margin: 10px 10px → margin:10px.
Typically achieves 30-40% file size reduction. Even better with Gzip.
Frequently Asked Questions (FAQ)
Q.Is my data safe?
A. Yes, completely safe. All compression is done in your browser, and CSS code is never sent to our servers.
Q.What if minified CSS doesn't work?
A. Usually works fine, but rare issues may occur with calc() or special syntax. Check the original code.
Q.Should I minify during development?
A. No, keep readable code during development. Apply minification only for production deployment.
Q.How do I generate source maps?
A. This tool provides basic compression only. Use build tools like Webpack or PostCSS for source maps.
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