The online JavaScript Deobfuscator, also known as a JavaScript Unpacker, is a powerful tool designed to decode obfuscated or packed JavaScript source code. Obfuscation is often used to make code difficult to read by transforming it into a compressed or scrambled format, which can make debugging, reviewing, or modifying the code challenging. This tool reverses that process by restoring the JavaScript to a more readable and structured form.

By deobfuscating the source code, the tool helps reveal the original logic, variable names (where possible), and code structure, making it significantly easier to understand how the script works. This is especially useful when analyzing third-party scripts, debugging minified code, or learning from existing JavaScript examples.

Once unpacked, the restored JavaScript code can be safely reviewed, revised, or edited as needed. Whether you are troubleshooting an issue, optimizing functionality, or simply trying to understand how a script operates, this tool provides a quick and convenient way to turn complex, unreadable JavaScript into clean, human-readable code.

How to Use?

The javascript deobfuscator is a handy little tool that will deocde javascript files that have been obfuscated.

1. Enter obfuscated javascript code in the textarea above.
2. Click on 'Deobfuscate Code' for the decoded javascript to show.
3. You can now either download the code or copy the code to the clipboard.
4. If you would just like to test out this online tool, click on 'Sample' which you can then test.
5. Unfortunately, this tool will not decode all types of obfuscated javascript.