"BOJ Username" is a Chrome extension designed to enhance user experience on the Baekjoon Online Judge (BOJ) platform by displaying names alongside usernames in group settings. This tool allows users to efficiently add, delete, and manage a list of usernames and corresponding names. With features like JSON file support, users can handle large datasets seamlessly, making it easy to maintain an organized list.

Key functionalities include adding new entries directly through a popup menu, deleting entries with a click, and managing data through JSON file uploads and exports. Users can view their current list in real-time, ensuring effective management of their data. This extension is particularly useful for those involved in collaborative problem-solving on the BOJ platform, streamlining the identification of group members.