During February 2025, contributed to the gchq/CyberChef repository by implementing support for the Base32 Hex Extended Alphabet in encoding and decoding operations. This work involved adding a new alphabet option and integrating it into both FromBase32 and ToBase32 components, ensuring seamless interoperability with systems requiring the extended alphabet. Comprehensive unit tests were developed to validate both standard and extended Base32 functionality across a range of inputs, maintaining backward compatibility. The project was executed using JavaScript and TypeScript, with a focus on cryptography and encoding/decoding. These enhancements improved data interchange capabilities and reinforced the reliability of encoding features within CyberChef.