Javascript DeObfuscator

JavaScript DeObfuscator – Decode Obfuscated JS Code Online

Use our JavaScript DeObfuscator to instantly decode and beautify obfuscated JavaScript code. Whether you're working with packed, eval-obfuscated, or encoded scripts, this tool helps make complex code readable for easier debugging and understanding.

What is JavaScript Obfuscation?

JavaScript obfuscation is the process of converting readable JS code into a difficult-to-understand format using techniques like eval functions, variable renaming, character encoding, or base conversions. It's commonly used for protecting intellectual property or reducing code visibility.

Why Use a JavaScript DeObfuscator?

This tool helps you:

• Understand complex or compressed JavaScript logic
• Debug code hidden behind eval or character encodings
• Reverse basic and intermediate levels of code obfuscation
• Study minified or protected code structures for learning or debugging

How to DeObfuscate JavaScript Code

1. Paste your obfuscated JavaScript code into the input area
2. Click the "DeObfuscate" button
3. Get the decoded and formatted output instantly

Example

Obfuscated Input:

eval(function(p,a,c,k,e,d){e=function(c){...}}(...))

DeObfuscated Output:

function NewObject(prefix) {
  var count = 0;
  this.SayHello = function(msg) {
    count++;
    alert(prefix + msg);
  };
  this.GetCount = function() {
    return count;
  };
}
var obj = new NewObject("Message : ");
obj.SayHello("You are welcome.");

Supported Code Types

• Eval-packed JavaScript using P.A.C.K.E.R technique
• JSFuck or character-based encoded scripts
• Base64, hexadecimal, or unicode-obfuscated JavaScript
• Simple multi-layered obfuscation formats

FAQs

Is this tool safe?

Yes. All deobfuscation takes place entirely within your browser. No code is uploaded or stored on servers.

Can it handle all obfuscation types?

It supports common techniques like eval, packing, and base conversions. However, some complex or encrypted scripts may require manual intervention or external tools.

Can I edit the output?

Yes. You can review, copy, and edit the decoded JavaScript code directly from the output window.

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Other popular searches include: JavaScript deobfuscator online, decode eval JavaScript, unpack JS, reverse obfuscated JS, decode JS code.