JavaScript Minifier
Paste your JavaScript code, click Minify, and get a smaller version with whitespace and comments removed.
How to Use
- Paste your JavaScript code in the input area.
- Click Minify to compress it.
- Copy the minified output.
JavaScript Minifier
Minify JavaScript code online for free. Remove whitespace and comments to reduce file size. No upload — runs in your browser.
Frequently Asked Questions
What does JavaScript minification do?+
It removes unnecessary whitespace, comments, and line breaks from JavaScript code. This reduces file size for faster page loads. For production use, consider a full minifier like Terser that also shortens variable names.
Is my code uploaded to a server?+
No. All minification happens entirely in your browser. Your code never leaves your device.
Does this rename variables?+
No. This is a whitespace/comment minifier. It does not rename variables or perform advanced optimizations like dead code elimination. For that, use a build tool like Terser or esbuild.