CSS Minifier

Compress or format your stylesheets instantly.

Important Safety TipMinification is a destructive process. Always keep a backup of your original, human-readable file (e.g., style.css) before replacing it with the minified version (e.g., style.min.css).

Related Optimization Tools

Base64 Images

Embed small images into CSS.

JSON Formatter

Minify/Beautify JSON data.

Cache Hashing

Generate hashes for file versioning.

Accelerate Your Website with CSS Optimization

Website speed is crucial for user experience and SEO rankings. One of the easiest wins for performance optimization is Minification.

Our CSS Minifier takes your beautifully formatted, human-readable CSS and compresses it into a highly efficient block of code that browsers can download and parse instantly. It removes comments, whitespace, and unnecessary formatting without breaking your styles.

How It Works

Minification (Compress)

Strips all unnecessary characters to reduce file size.

/* Header Styles */
.header {
color: red;
color:red;
}

Beautification (Format)

Expands minified code into a readable format for debugging.

.header{color:red}
↓
.header {
color: red;
}

Frequently Asked Questions

Why should I minify my CSS?

Minification removes unnecessary characters like spaces, newlines, and comments. This significantly reduces the file size (typically by 20-30%), which means your website loads faster for your visitors and improves your SEO scores (Core Web Vitals).

Does minification break my code?

No. Browsers do not need spaces or comments to understand CSS. color: red; works exactly the same as color:red;. Minification only changes the visual appearance of the code, not its functionality.

Can I reverse the minification?

Yes! You can use the Beautify mode in this tool to restore formatting. It will add indentation and newlines back to the code, making it readable for humans again. (Note: Original comments stripped during minification cannot be recovered).

How much space can I save?

It depends on your coding style, but savings of 20% to 40% are common. If you write with many comments and generous whitespace, the savings will be higher.

Is it safe for production?

Yes. Minification is a standard industry practice. All major websites (Google, Facebook, Amazon) serve minified CSS and JS assets to production references.

Should I minify HTML and JS too?

Absolutely. You should minify all text-based assets sent to the browser. This includes HTML, CSS, JavaScript, and SVG files.

Does this support SCSS or LESS?

This tool is designed for standard CSS. While it might successfully remove whitespace from SCSS files, it does not compile or validate SCSS logic/nesting.

What is the difference between Minification and Gzip?

Minification removes characters from the file itself. Gzip (or Brotli) compresses the file during network transmission. You should use both for maximum performance.

Is this tool secure?

Yes. All processing happens locally in your browser using JavaScript. Your code is never uploaded to our servers.

Do comments get removed?

Yes. Standard CSS comments /* ... */ are removed during minification to save space. If you need to preserve license headers, you should add them back manually after minification.