Contributed Russian UI localization to the FreeTubeApp/FreeTube repository, delivering 99.6% translation coverage by translating 968 out of 971 interface strings using YAML and the Weblate platform. Focused on enhancing accessibility for Russian-speaking users, the work included translating key settings such as 'Save To Folder' and 'Clipboard.' Collaborated with an external contributor to ensure translation quality and seamless integration into the codebase. Established a scalable localization workflow that supports future language additions, demonstrating skills in internationalization, localization, and translation. This effort improved user experience and expanded FreeTube’s accessibility without introducing new bug fixes during the development period.