Hex Decode

Hexadecimal Decoding, converts characters in hexadecimal format back to original text.

• Use Cases: Hex data decoding, color code conversion, memory address parsing
• Character Set: 0-9, A-F (case-insensitive)
• Error Handling: Invalid hex format produces error
• Feature: Every 2 hexadecimal characters represent one byte
• Example: "48656c6c6f" → "Hello"