JavaScript Minifier — Browser Developer Tool

Developer

JavaScript Minifier is a browser-based developer tool that removes javascript comments and unnecessary whitespace.

JS Minifier

Runs in this browserInput is processed only in this browser. It is not sent to or stored on a server.

This is simple whitespace/comment removal, not bundler-grade JavaScript optimization.

JavaScript

Minified JavaScript

Next actions

CSS Minifier JSON Formatter and Validator

What is it

JavaScript Minifier lets you paste code or strings and inspect the result immediately. It is useful for debugging, validation, and encoding tasks without server storage.

minified JS = JavaScript - comments - redundant whitespace

How to use

1Paste the input.
2Choose a mode if available.
3Read and copy the result.

Reference

JavaScript Minifier — Browser Developer Tool Reference
Input	Result
sample	removes JavaScript comments and unnecessary whitespace

Sources & standards

MDN Web Docs: Client-side web APIs - MDN Web Docs
ECMAScript Language Specification - Ecma International

FAQ

Is JavaScript Minifier input sent to a server?

No. This tool runs in your browser and does not send input to a server.

Can I use JavaScript Minifier with sensitive values?

It runs in the browser, but avoid pasting tokens or passwords on shared devices or during screen sharing.