Minification removes unnecessary characters — comments, extra whitespace, and line breaks — from CSS or JavaScript code without changing how it functions. The result is a smaller file that loads faster, since browsers download less data. This tool minifies CSS and JavaScript directly in your browser.

• Select whether your code is CSS or JavaScript.
• Paste your code into the input box.
• Click "Minify" to see the compressed output along with a size comparison.
• Copy the minified output for use in your project.

Faster Page Loads

Smaller CSS and JS files mean less data for the browser to download, which directly improves page load speed — especially important on mobile connections or for visitors with slower internet.

Reduced Bandwidth Costs

For high-traffic websites, minification adds up to meaningful savings in hosting bandwidth over time.

Search Engine Rankings

Page speed is a factor in search engine ranking algorithms, so faster-loading pages can have a small SEO benefit alongside the direct user experience improvement.

This tool uses simple text-based rules rather than a full language parser. For CSS, this works reliably in most cases. For JavaScript, minification is inherently more complex (variable renaming, dead code elimination, and safe handling of strings/regex require real parsing) — this tool handles basic comment and whitespace removal but is not a substitute for a dedicated build tool like Terser or esbuild for production-critical JavaScript.

Should I keep an unminified copy of my code?
Yes, always keep your original, readable source code as the version you edit. Minify only as a final build step before deployment.

Is my code sent to your server?
No, minification happens entirely in your browser using JavaScript.