Developer
Browser-based
JavaScript Minifier
Minify JavaScript snippets in your browser by removing comments and extra whitespace.
Your JavaScript code is processed locally in your browser.
This lightweight minifier removes comments and extra whitespace. For production bundles, still use a dedicated build tool.
Original: 0 B Minified: 0 B Saved: 0%
How to use JavaScript Minifier
Use JavaScript Minifier when you need a quick developer utility without installing software or creating an account. Enter your values or text in the tool above, review the instant result, then copy or save the output when the tool supports it.
- Works directly in a modern browser on desktop or mobile.
- Designed for fast repeat use from the root URL
/javascript-minifier. - Input stays in your browser unless a tool clearly says otherwise.
Features
- Remove line and block comments
- Collapse extra whitespace
- Show size savings
- Copy minified JavaScript
- Works without sign-up
Use Cases
- Minifying small JavaScript snippets
- Cleaning copied scripts
- Quick static site optimization
- Preparing examples for demos
Frequently Asked Questions
Is my JavaScript uploaded?
No. Minification happens inside your browser.
Can this replace Terser or a bundler?
For small snippets, it is useful. For production apps, use a full build tool.
Does it preserve strings?
The minifier avoids removing comments inside quoted strings and template literals.
Can I copy the output?
Yes, use the copy button after minifying.