CSS Minifier – Free Online Tool to Compress Stylesheets

Aivexel’s CSS Minifier tool helps you reduce your CSS file size by removing unnecessary characters such as whitespace, line breaks, indentation, and comments. Smaller CSS files mean faster website loading, improved SEO, and better user experience — all in one click.

Why Minify CSS?

• Boost page speed and improve Core Web Vitals
• Reduce file size and bandwidth usage
• Prepare production-ready CSS for deployment
• Remove comments and redundant formatting

What This Tool Does

• Removes spaces, line breaks, tabs, and comments
• Preserves valid CSS selectors, declarations, and structure
• Works with all standard and modern CSS syntax
• One-click “Minify” and “Copy” functions

How to Use the CSS Minifier

1. Paste your CSS code into the input box
2. Click “Minify CSS”
3. Copy or download the compressed CSS

FAQs

Will this change how my website looks?
No. Minifying CSS only removes unnecessary characters. It doesn’t affect layout or styling behavior.

Can I revert the minified CSS back to normal?
Not automatically — make sure to keep a backup of your original CSS. (We may add a beautifier tool in the future.)

Does this work with SCSS or Less?
No — this tool is designed specifically for standard CSS. Use a compiler first if you’re using preprocessor syntax.

Is this tool secure?
Yes. All processing is done in your browser. We do not store or transmit any CSS code you paste here.

Do I need an account?
No. The tool is free, browser-based, and doesn’t require registration.

Disclaimer

This tool is provided as-is to help developers and designers optimize CSS for performance. Aivexel is not responsible for any deployment issues that arise from improperly minified code. Always test your site after compression.