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JavaScript DeObfuscator

Make Obfuscated JavaScript Code Readable

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Paste Your Obfuscated JavaScript Here

DeObfuscated JavaScript

✅ Why Use This Tool?

Improves Code Readability

Makes complex and intentionally confusing JavaScript code understandable for analysis.

Saves Time

Quickly reverses common obfuscation and formatting issues without tedious manual work.

Ideal for Researchers

A perfect starting point for security researchers and developers auditing third-party scripts.

Free & Accessible

Use it anytime on any device, directly in your browser, without registration.

Shining a Light on Obfuscated Code 💡

The JavaScript DeObfuscator is a powerful online tool designed to transform complex, obfuscated, or minified JavaScript code into clean, understandable, and well-structured scripts. It serves as the crucial first step in analyzing code that was intentionally made difficult to read.

💻 What Can You DeObfuscate?

This tool reverses many common techniques used to hide the true purpose of a script. It can:

  • Convert heavily obfuscated or minified JavaScript into a readable format.
  • Format the code with proper indentation, line breaks, and spacing to reveal its structure.
  • Unescape strings, turning hexadecimal representations like `\x48\x65\x6c\x6c\x6f` back into `"Hello"`.
  • Support modern JavaScript (ES6+) and many common obfuscation patterns.

⚙️ How It Works

Using the JavaScript DeObfuscator is simple and effective:

  1. Paste Your Obfuscated JavaScript: Insert the confusing or minified code into the input box.
  2. Click DeObfuscate: The tool processes the code, applying formatting rules to restore readability.
  3. Copy or Download: Copy the deobfuscated code for analysis, debugging, or learning.

Why is Code Obfuscated?

Developers obfuscate code for several reasons. Sometimes, it's a benign attempt to protect intellectual property by making the code harder to copy. Most often, you'll see it as a byproduct of minification, where the goal is simply to reduce file size for performance.

However, obfuscation is also a primary technique used by malicious actors to hide the functionality of harmful scripts. By making the code unreadable, they attempt to bypass security scans and prevent analysis. A deobfuscator is a security researcher's first line of defense, making the code's logic visible so its true intent can be discovered. Whether you’re auditing third-party JavaScript, learning from compressed code, or debugging, this tool simplifies your work by making code clean and clear.