CSS Minifier - Online CSS Code Compressor

How to Use the CSS Minifier

1. Paste Your CSS: Copy your formatted CSS code and paste it into the input textarea on the left.
2. Or Upload a File: Click the file upload button to select a CSS file from your computer.
3. Minify: Click the "Minify CSS" button to compress your code by removing whitespace, comments, and unnecessary characters.
4. Review Results: See the size reduction percentage and compressed output in the right panel.
5. Copy or Download: Use the "Copy to Clipboard" button to copy the minified CSS, or click "Download CSS" to save it as a file.
6. Clear: Click "Clear All" to reset both input and output areas.

Pro Tip: Press Ctrl + Enter to quickly minify your CSS.

What is CSS Minification?

CSS Minification is the process of removing all unnecessary characters from CSS code without changing its functionality. This includes removing whitespace, line breaks, comments, and optimizing the code structure to reduce file size.

When you write CSS, you typically format it with indentation, spaces, and comments to make it readable for developers. However, browsers don't need this formatting to interpret the CSS. Minification removes these human-readable elements, resulting in a smaller file that loads faster.

/* Header Styles */
.header {
    background-color: #333;
    padding: 20px;
    color: white;
}

.header{background-color:#333;padding:20px;color:white}

Why Minify CSS?

Key Features

• Instant Compression: Minify CSS code in real-time with a single click
• Size Reduction Display: See exactly how much space you've saved with percentage and KB metrics
• Comment Removal: Automatically strips all CSS comments from your code
• File Upload Support: Upload CSS files directly from your computer with auto-minification
• Copy & Download: Easily copy minified CSS or download as a timestamped file
• No Installation Required: 100% browser-based, works offline after initial load
• Privacy Focused: This tool is designed for browser-side processing
• Keyboard Shortcuts: Use Ctrl+Enter for quick minification

Common Use Cases