JavaScript Obfuscator

JavaScriptVM Obfuscation

Beta

Transform your code into custom bytecode that runs on a virtual machine. The strongest protection against reverse engineering.

Get VM Protection

Or try free basic obfuscation (no VM)

Strongest protection

Code is converted to bytecode that cannot be directly understood

Anti-decompilation

No standard JavaScript to reverse engineer

Customizable VM

Each obfuscation generates unique opcodes and VM structure

Layered security

Combine with other obfuscation options for defense in depth

How It Works

Protect your code in three simple steps

Configure VM Options

Choose VM obfuscation settings and additional protection layers

Submit Your Code

Use our web interface or API to submit your JavaScript code

Get Protected Code

Download your VM-obfuscated code with full protection applied

See the Transformation

Your readable code becomes impenetrable bytecode that runs on a custom virtual machine

Before

Readable source code

calculator.js

Exposed

After

VM-protected bytecode

calculator.protected.js

VM Protected

Evaluate code

The original logic is converted to custom bytecode that only the embedded VM can execute. Static analysis tools cannot understand the code without first reverse-engineering the entire VM.

Protect Your JavaScript Project

Protect your JavaScript code, from simple scripts to complex applications

SaaS Applications

Protect your proprietary frontend logic and business rules from competitors

Licensed Software

Protect license validation and premium feature implementations

Browser Extensions

Secure your extension code from tampering and unauthorized modifications