de4js
online
Free
lelinhtinh.github.io/de4js
Vietnam
What it does
Deobfuscates JavaScript code packed with common tools like eval, JSFuck, JJencode, AAencode, and URL encoding. Also beautifies minified code.
When to use it
- Packed or minified JavaScript
- eval-based JS obfuscation
- Quick readability improvements
When not to use it
- PHP code
- Heavily customized obfuscation
- When you need step-by-step decode
Limitations
- Only handles known packer formats
- May not work on custom obfuscation
- No batch processing