CoWIN Vaccinator serves as a powerful browser extension that enables seamless and rapid booking of vaccination slots for COVID-19. By automating the information entry process, users can save significant time and avoid hassles typically associated with scheduling appointments on the CoWIN website. After installing the extension, users can access the CoWIN registration portal, where the tool automatically fills in necessary details required for booking slots. This offers a much-needed service, especially during high-demand vaccination periods, ensuring that users have better chances of securing their desired appointment time without manual effort.