JavaScript Obfuscator
Protect your JavaScript logic by scrambling variable names, strings, and control flows.
Why Obfuscate JavaScript?
Code delivered to the browser is visible to anyone who opens the page. If you have algorithms or business logic you would rather not hand over in readable form, obfuscation raises the effort required to understand them.
Obfuscation does not make client-side secrets safe. Anything shipped to the browser can eventually be recovered, so keep credentials and sensitive logic on the server.
How JavaScript Obfuscation Works
The obfuscator runs javascript-obfuscator with control-flow flattening, dead-code injection, a base64-encoded string array, number-to-expression conversion, and identifier renaming. The output is compact and behaves like the input, but with added indirection.
Because those transformations add overhead, benchmark the obfuscated build if performance matters. For sensitive operations, combine obfuscation with server-side logic.
Frequently Asked Questions
What is JavaScript obfuscation?
Obfuscation rewrites readable code into a form that is much harder to follow while keeping the same behavior. It is used to make reverse engineering and casual copying more time-consuming.
What transformations does this tool apply?
It runs javascript-obfuscator with compact output, control-flow flattening, dead-code injection, a string array with base64 encoding, number-to-expression conversion, and identifier renaming enabled.
Does obfuscation make code slower?
Control-flow flattening and dead-code injection add runtime overhead, so obfuscated code can run noticeably slower than the original. Benchmark before shipping if your code runs in a hot path.
Is obfuscated code secure?
Obfuscation is a deterrent, not encryption. A determined attacker can still read and reverse-engineer obfuscated code, so never rely on it to hide secrets or API keys.