JavaScript Minifier

Minify and compress JavaScript code online by removing unnecessary whitespace and comments.

Your JavaScript code is processed directly in your browser.

About This JavaScript Minifier

JavaScript Minifier is a free online tool that reduces the size of JavaScript source code by removing unnecessary comments, whitespace and formatting while preserving the code structure.

How To Use

  1. Copy your JavaScript source code.
  2. Paste the code into the input box.
  3. Click Minify JavaScript.
  4. Review the minified JavaScript output.
  5. Click Copy or Download to use the result.

Features

  • Free JavaScript minification.
  • Works directly in your browser.
  • Removes unnecessary comments.
  • Reduces unnecessary whitespace.
  • Shows original and minified file sizes.
  • Shows the percentage of size reduction.
  • Copy minified code with one click.
  • Download minified JavaScript as a .js file.
  • No registration required.

Frequently Asked Questions

What does a JavaScript Minifier do?

A JavaScript minifier removes unnecessary characters such as comments and whitespace from JavaScript code to reduce its size.

Is this JavaScript Minifier free?

Yes. The tool is free to use.

Is my JavaScript uploaded to a server?

No. The minification process runs directly in your browser.

Can I download the minified JavaScript?

Yes. After minification, you can download the result as a JavaScript file.

Does minification change my JavaScript logic?

The tool is designed to remove unnecessary formatting while preserving JavaScript syntax and behavior. You should still test important production code after minification.