webcrack

webcrack is a tool for reverse engineering javascript. It can deobfuscate obfuscator.io, unminify, transpile, and unpack webpack/browserify, to resemble the original source code as much as possible.

Try it in the online playground or view the documentation.

• 🚀 Performance - Various optimizations to make it fast
• 🛡️ Safety - Considers variable references and scope
• 🔬 Auto-detection - Finds code patterns without needing a config
• ✍🏻 Readability - Removes obfuscator/bundler artifacts
• ⌨️ TypeScript - All code is written in TypeScript
• 🧪 Tests - To make sure nothing breaks

Requirements

Node.js 22 or 24.

[!NOTE] webcrack depends on isolated-vm, which does not recommend using odd-numbered Node.js releases because they frequently break ABI/API compatibility with V8.

Command Line Interface

npm install -g webcrack@latest

Examples:

webcrack input.js
webcrack input.js > output.js
webcrack bundle.js -o output-dir

CLI Reference

API

npm install webcrack@latest

Examples:

import fs from 'fs';
import { webcrack } from 'webcrack';

const input = fs.readFileSync('bundle.js', 'utf8');

const result = await webcrack(input);
console.log(result.code);
console.log(result.bundle);
await result.save('output-dir');

API Reference

Donations

If this project has helped you, consider donating to support its development:

• GitHub Sponsors
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