CSS Minifier & Beautifier

Minify CSS to reduce file size or beautify CSS for better readability. Fast, free, and secure.

Input CSS

1

Controls

Beautify Options

Minify Options

Output CSS

1

How to Use

1

Choose Mode

Select "Beautify CSS" to format your code or "Minify CSS" to compress it.

2

Configure Options

Set indent size for beautification or choose to remove comments when minifying.

3

Paste CSS Code

Paste your CSS code into the input area or load sample data to test.

4

Process & Copy

Click the process button to transform your CSS, then copy the result to your clipboard.

Key Features

Dual Mode

Switch between minify and beautify modes to compress or format your CSS code.

Customizable Indentation

Choose between 2 or 4 spaces for indentation when beautifying CSS.

Comment Removal

Option to remove CSS comments when minifying to further reduce file size.

File Size Stats

View input/output sizes and percentage reduction when minifying CSS.

Swap Functionality

Quickly swap input and output to process CSS multiple times.

Client-Side Processing

All processing happens in your browser - your code never leaves your device.

Common Use Cases

Website Performance

Minify CSS files to reduce page load times and improve website speed.

Code Maintenance

Beautify minified CSS to make it readable for debugging and maintenance.

Production Deployment

Compress CSS before deploying to production to save bandwidth.

Code Review

Format CSS code before code reviews to ensure consistent styling.

Learning CSS

Beautify CSS from websites to study and learn from real-world examples.

Build Pipeline Testing

Test CSS minification before integrating into your build process.

Frequently Asked Questions

What is CSS minification?

CSS minification removes unnecessary characters like whitespace, comments, and line breaks from CSS code without changing its functionality. This reduces file size and improves page load times.

What is CSS beautification?

CSS beautification (or formatting) adds proper indentation, line breaks, and spacing to CSS code to make it more readable and easier to maintain.

Should I remove comments when minifying?

For production websites, yes - removing comments reduces file size. However, keep comments if you need them for documentation or if they contain important information like license notices.

How much can I reduce file size?

Typical CSS minification can reduce file size by 20-40%, depending on how much whitespace and comments are in the original code. The tool shows exact reduction percentage.

Is my CSS code secure?

Yes! All processing happens entirely in your browser. Your CSS code is never sent to any server and never leaves your device.

Can I use this for production websites?

While this tool is great for quick minification, for production websites we recommend using build tools like webpack, PostCSS, or cssnano that integrate minification into your deployment process.