Worked on the jellyfin-web repository to implement Korean translations and localization for the Jellyfin web application, focusing on error messages and user interface labels. Leveraged JSON for structured translation strings and utilized the Weblate translation workflow to streamline the process and ensure consistency. Collaborated with translation teams to establish a repeatable localization workflow, supporting future updates and additional languages. The work enhanced accessibility and improved the user experience for Korean-speaking users by reducing friction during setup and navigation. Emphasized frontend development and internationalization best practices, laying the foundation for ongoing multilingual support within the Jellyfin web platform.