Arm Guarino enhanced URL handling in the Tiptap Link extension, focusing on improved validation and auto-linking logic across the ueberdosis/tiptap and ueberdosis/tiptap-docs repositories. Using TypeScript and JavaScript, Arm introduced the shouldAutoLink option and refined URL parsing to better control automatic linking and prevent unsafe protocols. The work included updating tests, documentation, and demos to ensure consistent behavior and clear guidance for users. Arm also performed code cleanup, refactored comments, and fixed typos, contributing to overall maintainability. The changes addressed both user experience and security, demonstrating depth in front-end development and text editor engineering.