Using the JS Deobfuscator is simple β just three steps:
JavaScript obfuscation transforms readable code into hard-to-understand forms, commonly used to protect intellectual property. This tool helps you restore obfuscated code:
β’ Variable Renaming β Replace _0x4a2b, _0x5c4a with semantic names
β’ Hex String Decode β Convert '\x48\x65\x6c\x6c\x6f' back to 'Hello'
β’ Unicode Escape Restore β Convert '\u0048\u0065\u006c\u006c\u006f' back to 'Hello'
β’ String Array Decrypt β Detect string array + rotation + accessor pattern, inline restore strings
β’ Code Formatting β Auto-add indentation and line breaks for readability
Note: This tool handles common obfuscation patterns. For advanced obfuscation (VM protection, multi-layer encryption), specialized tools may be needed. All processing is done locally in your browser.
JavaScript obfuscation transforms readable source code into difficult-to-understand forms using techniques like variable renaming, string encryption, and control flow flattening. It's commonly used to protect frontend code from being easily copied or analyzed.
Deobfuscated code is functionally equivalent to the obfuscated version and can be run directly. However, since variable names are auto-generated, they may differ from the original source. It's recommended to understand the logic before using it.
Advanced obfuscation tools use multi-layer encryption, VM protection, and dynamic code generation that require runtime execution to decrypt. This tool primarily handles statically analyzable obfuscation patterns.
It supports default output patterns from javascript-obfuscator, obfuscator.io, and similar tools, including string array rotation, hex encoding, and Unicode escapes.