Sebastian Kuzniarz delivered German localization for the KOReader User Guide, contributing to the koreader/koreaderhub.io repository. He translated and updated 403 out of 1951 strings, reaching 20.6% progress and enhancing accessibility for German-speaking users. Working with PO files and leveraging Weblate for translation management, Sebastian ensured traceability through Git commit history and reproducible workflows. His focus on i18n and localization addressed the need for broader adoption of KOReader in German markets. The work demonstrated a methodical approach to translation, integrating new strings while maintaining consistency and quality, and laid a foundation for continued progress in the localization effort.