Free CSS/JS Minifier Online
Minify your CSS and JavaScript files to reduce file size and improve website loading speed with our free online CSS & JS Minifier. The tool removes whitespace, comments, and unnecessary characters from your code while preserving functionality. Smaller file sizes mean faster page loads, better SEO rankings, and improved user experience. Paste your CSS or JavaScript code and get optimized output instantly. See the exact compression ratio and bytes saved. All processing runs in your browser — your code is never sent to external servers. Essential for web developers and anyone optimizing website performance.
How to Use CSS/JS Minifier
Paste Code
Paste your CSS or JavaScript code into the input editor.
Minify
Click the Minify button to remove whitespace, comments, and unnecessary characters.
Copy Minified Code
Copy the minified output and use it in your website for faster loading.
Features
CSS & JS Support
Minify both CSS stylesheets and JavaScript files in one tool.
Compression Stats
See original and minified sizes with exact compression percentage.
Safe Minification
Removes whitespace and comments without breaking functionality.
Instant Results
Get minified code immediately — no waiting for server processing.
Benefits of Using CSS/JS Minifier
Completely Free
Use CSS/JS Minifier without any cost, limits, or hidden fees. No premium plans needed.
No Installation
Works directly in your browser. No software downloads or plugins required.
100% Private
Your files and data are processed locally. Nothing is uploaded to external servers.
Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop, tablet, and mobile.
No Sign-Up
Start using the tool immediately. No account creation or email verification.
Always Available
Access this tool 24/7 from anywhere in the world, on any device.
Frequently Asked Questions
Complete Your Developer Tools Workflow
These free tools work seamlessly with CSS/JS Minifier to handle every step of your workflow.