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Step 1
Paste your uncompressed CSS into the input field.
CSS Minifier Online
Use NewTools to minify basic CSS directly in your browser. Basic browser-side minifier for comments and spacing around symbols; it is not a full build optimizer.
Fast CSS Minification. Instantly compress CSS files by removing spaces and comments, all within your browser.
No installation
Fast processing
Browser friendly
Privacy-aware
Features
Whitespace Removal: Eliminates all unneeded spaces, tabs, and line breaks without breaking selectors.
Comment Stripping: Removes /* comments */ entirely from your stylesheet to save bytes.
Syntax Safe: Maintains spaces where necessary (e.g., inside strings or specific calc functions).
Local Processing: Executes standard text parsing natively without sending your CSS to any backend server.
How It Works
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Step 2
Click the Minify CSS button.
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Step 3
Copy the compressed output or download it as a .css file.
Common Use Cases
Production Deployment
Prepare stylesheets for live websites to minimize render-blocking resources.
Inline CSS Formatting
Condense CSS code to place it directly inside HTML <style> tags efficiently.
Quick Cleanup
Remove bloated comments from third-party themes before integration.
Tips & Best Practices
Tip 1
Always test your minified CSS in a browser before deploying it to production.
Tip 2
Ensure your CSS does not rely on CSS hacks that depend on specific whitespace patterns, as they might be stripped.
CSS Minifier
Offline Execution
Your CSS code never leaves your device. The parsing logic operates completely locally, ensuring total privacy.
Frequently Asked Questions
Does this tool use Autoprefixer?
No. This tool only performs basic minification by removing whitespace and comments. It does not add vendor prefixes.
Can it compile SASS or LESS?
No. This tool strictly minifies standard CSS code. It cannot compile preprocessor languages.
Is my code uploaded?
No, processing happens instantly on your device via local JavaScript execution.