Javascript DeObfuscator

JavaScript DeObfuscator Online – Free JS DeObfuscation Tool

JavaScript DeObfuscator Online is a free web-based tool that helps you convert obfuscated or hard‑to‑read JavaScript code into a more readable and understandable format, directly in your browser, without installing any software. It restructures confusing variable names, formatting, and code structure to make analysis easier.

This tool is ideal for developers, students, security researchers, and learners who want to understand obfuscated JavaScript code, debug scripts, or study third‑party JS logic safely.

Maximum Input Size

The JavaScript DeObfuscator Online tool supports large JS input, allowing you to deobfuscate long scripts or complex code blocks without limitations. You can safely process small snippets or large JavaScript files without performance issues.

Input Options

You can deobfuscate JavaScript using the following methods:

• Paste obfuscated JavaScript code directly into the input box

• Use the Sample button to display an example obfuscated JavaScript code only, so users can understand what obfuscated code looks like and how the tool works
  (The Sample button is only for demonstration. It does not deobfuscate the code.)

How to DeObfuscate JavaScript Online

1. Paste your obfuscated JavaScript code into the input field
   or click the Sample button to view an example obfuscated JS code

2. Click the Convert / DeObfuscate button to process the JavaScript code

3. View the deobfuscated, more readable JavaScript output instantly

4. Use the Reset button to clear all input and output fields

Available Buttons

• Convert / DeObfuscate – Converts obfuscated JavaScript into a more readable format

• Reset – Clears all input and output data

• Sample – Shows a sample obfuscated JavaScript code only for guidance, helping users understand what to enter. No deobfuscation is performed by this button.

Why Use JavaScript DeObfuscator Online

Obfuscated JavaScript is difficult to read, analyze, and debug. Deobfuscating JS helps developers understand code logic, detect potential issues, and learn how scripts work internally.

Using a JavaScript deobfuscator improves code analysis, saves time, and makes complex JavaScript easier to study and maintain.

Key Features

• Deobfuscate JavaScript online instantly

• Supports large JS code input

• Convert, Reset, and Sample buttons included

• Improves readability of obfuscated code

• No software or plugin required

• Works on all devices and browsers

Security and Privacy

Your data is completely safe. All JavaScript deobfuscation is performed instantly in your browser. No input code is stored, logged, or shared, ensuring full privacy and security.

Editorial Staff

About the Editorial Staff

Editorial Staff at Spot Web Tools is a team of specialized content writers that strives to share quality and unique content. Our Writer's main objective is to cover the different aspects of technology and to help you use the internet more effectively.