Defend your intellectual property from reverse engineering, tampering and theft with industry-leading obfuscation technology.
JavaScript is a browser-interpreted language, so it must be visible to browsers on the front end. Unfortunately, anyone can read it by viewing the source code of the web page your script runs on.
There are two general ways to protect intellectual property: legally (copyrights, contracts) or technically (code protection). Code obfuscation is currently one of the best technical methods for protecting JavaScript from reverse engineering.
Obfuscation renders software unintelligible while keeping it functionally equivalent to the original code, making it highly resistant to reverse engineering.
Obfuscation is the practice of methodically transforming source code — renaming variables, rearranging logic, hiding algorithms and data structures — all with the goal of making it virtually impossible to read while preserving full functionality.
With JavaScript Obfuscator, your code becomes impossible to understand, preventing anyone from stealing or modifying it.
JavaScript source code can be easily viewed by anyone. This means anyone can steal your code, modify it, and reuse it. Code obfuscation encrypts the code and makes it unreadable while keeping it fully functional.
If you are releasing valuable software, obfuscation should be part of your application development process.
The goal of obfuscation is to make a program unintelligible without altering its functionality, making it extremely difficult for anyone to reverse-engineer your application.
JavaScript Obfuscator offers advanced techniques that go far beyond simple renaming, creating a layered defense that is resilient against automated deobfuscation tools.
Multiple protection layers working together to keep your code secure.
Replaces identifiers with meaningless character sequences across your entire application, ensuring consistency of name changes across all files.
Changes control flow to produce spaghetti logic that leads to the same results but is extremely difficult for attackers to analyse.
Reduces file size and makes code more efficient, helping your application load faster while reducing bandwidth consumption.
Inserts executable but semantically neutral code that makes disassembled output significantly harder to analyse.
Encrypts all string literals so attackers cannot search for strategic text in your code. Only the encrypted version exists in the output.
Lock your code to IP addresses, domain names, and more. Create trial versions with time limits and other advanced restrictions.
Start obfuscating your code in seconds with our free online tool, or download the desktop app for batch processing.
Stay ahead with complete support for modern JavaScript syntax including ES2024+ features, async/await, modules, and more.
JavaScript Obfuscator Desktop provides all the features you need to scramble and protect JavaScript code. Protect JavaScript source code that's embedded in HTML, PHP, ASP, ASPX, JSP and similar files.
Obfuscating JavaScript files manually one by one is time-consuming. The desktop GUI helps you protect entire projects in just a few clicks, with batch processing built in.