Contributed to the jellyfin/jellyfin-web repository by delivering Korean translations for error messages, directly enhancing accessibility for Korean-speaking users. Focused on front end development and localization, the work involved updating JSON language files through the Weblate workflow to ensure translations remain current with ongoing product changes. The implementation prioritized low-risk content updates, introducing no UI regressions or disruptions to existing features. By expanding internationalization coverage, this contribution supported Jellyfin’s broader goal of improving the global user experience and laid the foundation for future language support. No bug fixes were addressed during this period, with efforts concentrated on localization improvements.