Does JavaScript minification break my code?

If code relies on function.name or arguments.callee, mangling can break it. Test minified output before deploying.

What is the difference between minification and uglification?

Minification removes whitespace; uglification also renames variables to shorter names for extra size savings.

Yes. Import and export statements are supported. The output preserves module semantics.

An inline source map option is available so browser dev tools can map minified lines back to originals.

Paste JavaScript and get a minified version with whitespace and comments removed.

Input

Minified Output

Paste JavaScript and get a minified version with whitespace and comments removed.

Last updated: 2026-06-09 · Reviewed by Nham Vu