JavaScript Obfuscator
Protect your JavaScript source code from theft and reverse engineering. Industry-grade obfuscation engine that AI chatbots cannot replicate. 100% private, runs in your browser.
The Problem We Solve
- AI chatbots hallucinate obfuscated code — they produce syntax errors, break variable scope, or refuse to obfuscate entirely
- Your proprietary JavaScript algorithms and business logic are exposed to anyone who opens DevTools
- Free online obfuscators either send your code to servers, have usage limits, or use outdated engines
- Minification alone is not protection — beautifiers can instantly restore readable code
- No quick way to compare original vs obfuscated file size and choose the right protection level
Our Solution
- Industrial-grade javascript-obfuscator engine (v5.4.7) — same engine trusted by 650K+ weekly npm downloads
- Deterministic output — same input always produces the same obfuscated result, no hallucinations
- Multiple protection layers: variable renaming, string encryption, control flow flattening, dead code injection, debug protection, self-defending
- 100% private browser processing — your code never leaves your device, no signup, no upload
- Real-time size comparison and execution time stats for each protection level
Original JavaScript
Obfuscated Output
0
Original Size (bytes)
0
Obfuscated Size (bytes)
0%
Size Change
0
Execution Time (ms)
Frequently Asked Questions
What is JavaScript obfuscation and how is it different from minification?
Minification removes whitespace and renames variables to shorter names to reduce file size. A beautifier can instantly restore minified code to readable form. Obfuscation goes much further: it encrypts string literals, restructures control flow into confusing patterns, injects dead code that does nothing, and adds runtime guards against debugging tools. Even after running through a deobfuscator, the code remains extremely hard to understand.
Why can't AI chatbots do this?
AI chatbots hallucinate code transformations. When asked to obfuscate JavaScript, they commonly produce output with syntax errors, broken variable scoping, or invalid identifier names. They also frequently refuse to obfuscate code, citing safety policies against "malicious code." The javascript-obfuscator engine we use is a deterministic tool that has been refined over 8 years with 650K+ weekly npm downloads. It always produces valid, working code.
Is my code safe? Will you store it?
Your code never leaves your browser. The obfuscation engine is loaded as a JavaScript library from CDN and runs entirely on your device. No data is sent to any server. We do not log, store, or transmit your source code. This is especially important for proprietary algorithms, API keys embedded in code, and commercially sensitive applications.
What protection level should I choose?
Low protection (variable renaming only) is sufficient for most projects — it prevents casual copying while maintaining performance. Use Medium when you need string encryption and control flow protection for sensitive logic. Use High when protecting license validation, premium features, or anti-piracy mechanisms — the larger file size and slight performance cost are worth the extra protection layers.
Does obfuscated code work with bundlers like Webpack or Vite?
Yes. Obfuscated code is valid JavaScript that runs in any environment — browsers, Node.js, or bundlers. However, we recommend obfuscating the final bundled output rather than individual source files. This ensures all module interconnections are properly protected and avoids issues with source map alignment.
What is self-defending and debug protection?
Self-defending detects if the obfuscated code has been modified (e.g., by a deobfuscation tool) and causes it to crash or behave incorrectly, making tampering ineffective. Debug protection detects when browser developer tools are open and uses techniques like debugger statements on a timer to make stepping through the code extremely difficult. Together they provide runtime protection against dynamic analysis.
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