CSS Minifier
Compress CSS by removing whitespace, comments, and unused rules. Optimize for production delivery.
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Output
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Frequently Asked Questions
What is CSS Minifier used for?
CSS Minifier compresses stylesheets for production deployment by removing whitespace, comments, and unnecessary punctuation. Smaller CSS files load faster, improving page render times and Core Web Vitals metrics that affect SEO rankings.
How does the minification process work?
The tool removes CSS comments, trims whitespace around braces and colons, removes unnecessary semicolons before closing braces, and collapses multiple spaces into single spaces. The output maintains valid CSS syntax while dramatically reducing character count.
Will my styles still work after minification?
Yes. The minifier only removes content that browsers ignore during rendering. All selectors, properties, and values remain intact. The visual appearance and functionality of your styles will be identical to the original.
What is a typical size reduction?
Well-formatted CSS typically reduces 20-40% in size. Heavily commented stylesheets or those with extensive whitespace see larger improvements. Combine minification with HTTP compression (gzip/brotli) on your server for optimal delivery.
Is my data sent to a server?
No. All processing happens in your browser with no external communication. Your CSS code, whether proprietary or containing sensitive design logic, stays completely private on your device.
What keyboard shortcuts are available?
Press Ctrl+Enter (or Cmd+Enter on Mac) while in the input field to quickly minify your CSS. This allows rapid optimization during development without interrupting your workflow.