CodeItBro

JavaScript Minifier

Compress and minify JavaScript code for production. Remove whitespace, comments, and reduce file size to improve loading times.

Minification Options

How It Works

The JS Minifier runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

  • No server interaction – data never leaves your device
  • Instant results since there is no network latency
  • Works offline once the page is loaded
  • Free to use with no usage limits

How to Use

1

Paste or Upload

Enter your JavaScript code or upload a .js file.

2

Configure

Choose minification options.

3

Export

Copy or download the minified JavaScript.

Example Usage

Minifying JavaScript by removing whitespace.

Input
function add(a, b) { return a + b; }
Output
function add(a,b){return a+b}

Frequently Asked Questions

What does minification do?
Minification removes whitespace, comments, and optionally shortens variable names to reduce file size for production.
Is it safe for production?
Yes! The minifier preserves all functionality while reducing file size, typically by 30-50%.
What is name mangling?
Name mangling shortens variable and function names (e.g., 'myVariable' becomes 'a') for maximum compression.

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The JS Minifier is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.