JavaScript Code Obfuscator / De-obfuscator
Light mode minifies + renames safely; it keeps behavior intact. If you need stronger obfuscation use Heavy Mode.
Input Code
Output Code

How to use this tool

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Light Mode: Quick obfuscation. Adds line breaks for readability. Check variable names if needed.
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Heavy Mode: Strong obfuscation with Base64 encoding and _0x variables. Use for more secure code.
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Save Mangling Map: Always save this if you want to reverse the Heavy Mode output later.
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De-obfuscate / Reverse: Use the saved mangling map to restore code. Verify that the output matches the original.
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Safety check: Test your code in a safe environment before publishing. Avoid running untrusted obfuscated code directly.
Heavy Mode Notice Heavy Mode uses Base64 encoding and _0x variables. Check your code carefully after obfuscation.
Heavy Mode applies Base64 encoding to strings and uses _0x variables. This makes code harder to read but may affect performance. Always test your code after obfuscation.

JavaScript Code Obfuscator / De-obfuscator

Our JavaScript Code Obfuscator / De-obfuscator is a versatile, developer-focused tool designed to help you protect and manage your JavaScript code with ease. Whether you are sharing code snippets publicly, securing proprietary logic, or simply testing, this tool ensures your code remains safe and manageable. With both obfuscation and de-obfuscation capabilities, it provides complete control over how your JavaScript is transformed and restored.

Light Mode offers a straightforward obfuscation process that preserves readability while still protecting your code from casual inspection. It's ideal for testing, collaboration, or when you want a balance between security and clarity. Heavy Mode goes a step further, applying advanced obfuscation with mangled variable names and Base64 encoding. This ensures your logic is well-hidden and harder to reverse-engineer, making it suitable for production-level security needs.

For developers who need precision and reversibility, the Save Mangling Map feature keeps track of all renamed variables, allowing you to restore the original names if necessary. Additionally, the Add Line Breaks option enhances Light Mode outputs by automatically formatting code for easier reading, debugging, and sharing.

This tool is designed to be simple, reliable, and fully reversible when used correctly. Developers can test their code in all modes, verify outputs, and ensure that obfuscation does not break functionality. It supports common JavaScript structures including functions, classes, arrays, strings, and more, providing a comprehensive solution for everyday coding and security needs.

Whether you are a beginner experimenting with code protection or an experienced developer preparing production scripts, this tool is a reliable companion for safe and efficient JavaScript management.

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Example

Here's an example of how our obfuscator transforms JavaScript code:

Original Code:

function calculateTotal(price, quantity) { // Calculate the total price const tax = 0.08; // 8% tax rate const subtotal = price * quantity; const total = subtotal * (1 + tax); // Return the formatted total return `$${total.toFixed(2)}`; } // Display the result console.log(calculateTotal(19.99, 2));

Light Mode Obfuscated:

/* LIGHT_MAP:{"calculateTotal":"f0","price":"v0","quantity":"v1","tax":"c0","subtotal":"v2","total":"v3"} */ function f0(v0,v1){const c0=0.08;const v2=v0*v1;const v3=v2*(1+c0);return`$${v3.toFixed(2)}`}console.log(f0(19.99,2));

Heavy Mode Obfuscated:

/* MANGLE_MAP:{"calculateTotal":"_0x0","tax":"_0x1","subtotal":"_0x2","total":"_0x3"} */ function _0x0(_0x4,_0x5){const _0x1=0x08;const _0x2=_0x4*_0x5;const _0x3=_0x2*(0x1+_0x1);return ""+_0x3['toFixed'](0x2)}console["log"](_0x0(0x13,0x2));

Frequently Asked Questions

What is a JavaScript Code Obfuscator?
A JavaScript Code Obfuscator is a tool that converts readable JavaScript code into a scrambled or hard-to-read format. It helps protect your JavaScript code from unauthorized copying, tampering, or reverse engineering while keeping the code fully functional. This is especially useful for developers deploying code on websites or apps.
How do Light Mode and Heavy Mode differ?
Light Mode: Provides basic obfuscation by renaming variables and formatting the code. The output is still somewhat readable, making debugging easier.

Heavy Mode: Applies advanced obfuscation techniques, including variable mangling and Base64 string encoding. This makes your code extremely difficult to understand, ideal for securing sensitive logic or proprietary functions.
What is a Mangling Map, and why should I use it?
The Mangling Map records the original variable names and their corresponding obfuscated names. It allows developers to reverse heavy obfuscation if needed, ensuring the code can still be maintained or updated later. Always save the Mangling Map when using Heavy Mode.
Is this tool safe to use on live websites or production code?
Yes. The obfuscated JavaScript code functions exactly like your original code. However, it's recommended to test the output in a development environment first. Use the provided tip section to review the results carefully, check variable reversibility, and ensure no functionality breaks occur.
Do I need to install anything to use this tool?
No installation, external APIs, or AI integration is required. This is a fully browser-based JavaScript obfuscator and de-obfuscator. Simply paste your JavaScript code, select Light Mode or Heavy Mode, optionally save the Mangling Map, and instantly get obfuscated or de-obfuscated code for secure deployment.
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