JS Obfuscator
Professional JS Obfuscator
JavaScript Input
Obfuscated Output
JS Obfuscator
Professional JS Obfuscator
Features
- Rename variables to opaque identifiers (var foo → var _0x1a2b)
- Encode string literals as hex ('hello' → "\x68\x65\x6c\x6c\x6f")
- Convert decimal numbers to hex
- Optional dead-code injection
- This is light obfuscation — real obfuscators do control-flow flattening, function wrapping, and scope-graph rewrites; for those use javascript-obfuscator.io or build-time tooling
How to use
- Enter your input data in the provided field.
- Configure any options as needed.
- View the results instantly and copy or download the output.
Tips & Best Practices
- String encoding and variable renaming raise the bar for casual reading; they don't stop a determined reverse-engineer with a debugger.
- For shipping client-side IP, prefer server-side execution where possible — anything that runs in the browser can be decoded.
- Obfuscation has runtime cost. Heavy hex encoding noticeably slows string-heavy code.
- Don't obfuscate library code (jQuery, lodash, etc.) — pulls in the un-obfuscated version negates the work.
- For true protection, combine obfuscation with anti-debugging (Function.prototype.toString check), domain locks, and a WebAssembly module for sensitive logic.
FAQ
Is this tool free to use?
Yes, completely free with no registration, no limits, and no hidden costs.
Is my data private?
All processing happens in your browser. No data is ever sent to any server or third party.
Does it work offline?
Once loaded, the tool works entirely offline. All processing is done client-side with JavaScript.
Which browsers are supported?
Works in Chrome, Firefox, Safari, Edge, and all modern browsers on desktop and mobile.
Can I use the results commercially?
Yes, all output is yours to use freely in any personal or commercial project without restrictions.