JavaScript Obfuscator

Runs 100% in your browser. No uploads. No server processing.
Note: “Decode” is usually not truly possible; the button below does Beautify / Format.

Code

Options

Preset

Identifier names

String array threshold (0..1)

Advanced (may slow/break code)

Control flow flattening Dead code injection Debug protection Self defending

For best compatibility: keep Advanced options off.

Privacy:
- No fetch/XHR calls
- No analytics
- Code stays in the browser