Worked on the microsoft/web-dev-for-beginners repository to enhance the Chrome extension experience by modernizing its architecture and improving performance. Focused on upgrading the extension’s API usage from browserAction to the newer action API, which resolved icon display issues and aligned the project with current Chrome extension standards. Replaced DOM canvas rendering with OffscreenCanvas to optimize background task performance and increase icon rendering efficiency. These changes improved the extension’s reliability and maintainability for learners. The work was implemented using JavaScript and leveraged browser extension development best practices, emphasizing future-proofing and efficient rendering pipelines without introducing new bugs during the development period.