Delivered a complete Vietnamese translation of the KOReader User Guide, covering 1,951 strings in the koreader/koreaderhub.io.git repository. Focused on localization and translation, the work involved implementing an end-to-end workflow using Weblate and PO files to ensure production-ready, repeatable translations. This effort expanded accessibility for Vietnamese-speaking users and streamlined onboarding by reducing language barriers. No critical bugs were addressed during this period, as the primary emphasis was on feature delivery and refining the translation pipeline. Collaboration with localization teams demonstrated a methodical approach to internationalization, enhancing the project’s readiness for broader global adoption and ongoing multilingual support.