Dev UtilitiesJS Minifier
Minify your JavaScript code securely to reduce bundle size and improve load times.
What is a JavaScript Minifier?
A JavaScript minifier compresses JS code by removing whitespace, comments and shortening variable names — reducing bundle size without changing functionality. Smaller bundles mean faster page loads and better performance scores.
Key features:
- Removes whitespace, comments and dead code
- Significantly reduces JavaScript file size
- Improves page load time and Lighthouse scores
- Powered by Terser — the industry standard JS minifier
- One-click copy of minified output
- Runs entirely in your browser — your code is never uploaded
Frequently Asked Questions
Will minifying JavaScript break my code?
No. Minification preserves the logic and behavior of your code. It only removes characters that are irrelevant to execution, like whitespace and comments.
Is my JavaScript code safe to paste here?
Yes. All processing is done locally in your browser using Terser. Your code is never sent to any server.
What's the difference between minification and obfuscation?
Minification reduces file size by removing unnecessary characters. Obfuscation intentionally makes code hard to read to protect intellectual property. This tool focuses on minification for performance.