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Developer⭐ Most Popular
CSS Minifier
Minify CSS to reduce file size for production
Browser-only
Files stay on device
Instant processing
No server wait
100% Free
No signup needed
CSS Minifier
How to use CSS Minifier
- 1
Select or drop your file into the upload zone
- 2
Adjust any available settings for your conversion
- 3
Click the Convert / Process button
- 4
Download your result immediately
Key Features
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100% browser-based — no server upload required
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Completely free with no signup needed
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Works on desktop, tablet, and mobile
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Fast processing using modern browser APIs
Frequently Asked Questions
Is this tool completely free?
Yes — all tools on Converter44 are completely free with no hidden charges or subscription required.
Are my files safe and private?
Absolutely. All processing happens in your browser. Your files never leave your device or get uploaded to any server.