Delivered bilingual Chrome extension documentation and integration for the myparcelnl/developer repository, focusing on improving onboarding and extension readiness. Developed a dedicated documentation page and a new Markdown file outlining installation and usage, while integrating these updates into the main README. Emphasized clarity and accessibility by providing both English and Dutch content, ensuring consistency across languages. Utilized Markdown, TypeScript, and YAML to structure and present technical information effectively. This work established a clear foundation for future extension development, reduced support inquiries, and enhanced guidance for partners. The documentation improvements directly support faster developer onboarding and maintainability within the repository.