JavaScript Minifier
Minify your js code with this free online JavaScript minifier.
Minify JavaScript to shrink bundle size and improve load performance. Remove whitespace, comments, and dead code for production deployment.
JavaScript Minifier
Minify your js code with this free online JavaScript minifier.
About this tool
Minify JavaScript to shrink bundle size and improve load performance. Remove whitespace, comments, and dead code for production deployment.
Enter your JavaScript code to compress it..
Output appears here...
Enter your JavaScript code to compress it..
FAQ
Common questions and answers about this topic.
What does JavaScript minification do?
Removes whitespace, comments, and shortens variable names to reduce file size for faster page loading.
Will minification break my code?
No, the minified code is functionally identical. However, debugging minified code is harder — use source maps in production.
How much can file size be reduced?
Typically 30-60% depending on code style and comment density.
Is my data sent to any server?
No, JavaScript minification runs entirely in your browser. Your source code is processed locally and never sent to any external service.