JavaScript Deobfuscator

No, deobfuscation depends on the complexity of the protection. It works best on simple packing and eval-based obfuscation, but highly complex transforms may fail.

Yes, deobfuscators are vital tools for security analysts to inspect potentially malicious scripts that are hidden behind layers of obfuscation to avoid detection.

Usually no. If original variable names were replaced with generic ones (like a, b, c), it is impossible to know what the original names were originally.