Contributed to the louislam/uptime-kuma repository by delivering a comprehensive Polish language translation and implementing accessibility enhancements to improve the user experience for Polish-speaking users. Leveraged i18n and localization skills to update 94.4% of translation strings using JSON and the Weblate platform, ensuring consistent date formatting and UI alignment. Established a repeatable localization workflow to streamline future language updates and maintain interface consistency. The work addressed inclusivity by expanding translation coverage and aligning accessibility standards, supporting a broader user base. Collaboration with other contributors facilitated a co-authored approach, resulting in a more accessible and internationally friendly application interface.