JavaScript Minifier

Minify your JavaScript code by removing comments and extra whitespace. Includes syntax validation. This is a basic comment/whitespace minifier, not a full AST-based optimizer.

Minify JavaScript

Paste your JavaScript code below

How It Works

  1. Paste your JS code
  2. Click Minify
  3. Copy the compressed result

Features

  • Removes single/multi-line comments
  • Collapses whitespace
  • Removes extra line breaks
  • Syntax validation

Limitation

This is a basic whitespace/comment removal minifier, NOT a full AST-based minifier. It does not rename variables or perform advanced optimizations.

Your text is processed entirely inside your browser.

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Frequently Asked Questions

Is this a full AST-based JavaScript minifier?

No. This is a basic whitespace and comment removal minifier. It removes comments and extra whitespace but does not perform variable renaming, dead code elimination, or other advanced optimizations.

Does it validate my JavaScript syntax?

Yes. The tool attempts to compile your code using new Function() after minification to check for syntax errors. If errors are found, they are displayed gracefully.

Is my JS code uploaded to a server?

No. All processing happens entirely in your browser. Your code never leaves your device.

What compression ratio can I expect?

Typical savings of 15-30% for code with comments and whitespace. For already minified code, savings will be minimal.