About JavaScript Obfuscator
Obfuscate and protect your JavaScript code. This free online tool helps you protect your JS code from being stolen, copied, or reverse engineered.
Transform JavaScript into harder-to-read but executable code to discourage casual inspection and copying.
Key features
- Security task Transform JavaScript into harder-to-read but executable code to discourage casual inspection and copying.
- Required material Paste syntactically valid browser or Node.js JavaScript that does not rely on source text remaining unchanged.
- Parameters that must match Select obfuscation strength and available transformations such as identifier renaming, string encoding, control-flow changes, compact output, or self-defense.
- Result and verification The output is a transformed script that should be saved separately, tested, and deployed with suitable source-map policy.
How to use JavaScript Obfuscator
Follow this workflow to work with JavaScript obfuscation safely and accurately.
- Provide the required material Paste syntactically valid browser or Node.js JavaScript that does not rely on source text remaining unchanged.
- Match security parameters Select obfuscation strength and available transformations such as identifier renaming, string encoding, control-flow changes, compact output, or self-defense.
- Run the operation Run the operation locally, keep sensitive JavaScript obfuscation out of logs and screenshots, and never assume a successful transformation proves secure deployment.
- Verify before use The output is a transformed script that should be saved separately, tested, and deployed with suitable source-map policy.
Usage tips
- Start with moderate options and add aggressive transforms one at a time while running tests.
- Never embed API secrets or private keys in client JavaScript; obfuscation cannot hide them securely.
- Measure bundle size, startup time, and runtime performance after transformation.
Frequently asked questions
Transform JavaScript into harder-to-read but executable code to discourage casual inspection and copying.
Paste syntactically valid browser or Node.js JavaScript that does not rely on source text remaining unchanged.
Select obfuscation strength and available transformations such as identifier renaming, string encoding, control-flow changes, compact output, or self-defense.
Obfuscation is not encryption or access control. Determined analysts can still recover logic, and aggressive settings may break reflection, dynamic property access, debugging, or older browsers.