JS-Confuser

Protect your app

with next-level

obfuscation

JS-Confuser is a powerful JavaScript obfuscation tool that makes your programs impossible to understand, copy, re-use or modify without authorization.*

Free

Open Source

*May not be entirely impossible, but it will be very difficult.

App.js

UNPROTECTED

Try It Out

// Verify the user's license key
async function checkUserLicense(){
  const licenseKey = "YOUR_LICENSE_KEY";
  // Send a request to the license server
  const response = await fetch({
    url: "https://api.example.com/check-license",
    method: "POST",
    body: JSON.stringify({ licenseKey })
  });
  const data = await response.json();
  // User does not have a valid license :(
  if (!data.licenseStatus) {
    

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JS-Confuser AI is a powerful AI chat assistant to answer complex questions about JS-Confuser.

This feature is currently experimental and may not function as expected.

What Is This?

JavaScript Obfuscation helps protect your code from being stolen and being reverse engineered. This tool transforms your original JavaScript source code into a new representation that's harder to understand, copy, re-use and modify without authorization. The obfuscated result will have the exact functionality of the original code.

Why JS-Confuser?

Highly Effective

JS-Confuser uses state-of-the-art obfuscation techniques to protect your code.

Defend your Intellectual Property

Stop malicious actors from stealing your source code or your intellectual property.

Enforce Licensing and Paywalls

Prevent reverse engineers from gaining unauthorized access to your app.

Detect and Prevent Tampering

JS-Confuser can detect and prevent real-time tampering with your code.

Obfuscation Done Right

Animation of JS-Confuser.com Playground in Action

Highly Configurable

Choose from Low, Medium, or High presets levels, or create custom configurations for tailored obfuscation.

Fast & Privacy-Focused

Runs entirely in your browser, ensuring lightning-fast performance and complete code privacy.

Advanced Tooling

Evaluate and debug obfuscated code, customize the options using a JavaScript file, use the built-in Prettier, and more.

Ready to Protect Your Code?

Start Using JS-Confuser Today

Secure your JavaScript with the most advanced and comprehensive obfuscation tool available.
Protect sensitive business logic, your intellectual property, or personal projects with ease using JS-Confuser.
Experience powerful obfuscation, seamless configuration, and complete documentation—all for free.