The ETS APCJ Extension is a specialized tool designed for administering Advanced Placement (AP) Chinese and Japanese exams to students using Chromebooks. This extension operates as a Progressive Web App (PWA) and requires students to log in with credentials provided specifically for test day.

One of the key features of the ETS APCJ Extension is its kiosk mode, which enhances security during assessments by restricting access to other applications. This ensures a focused testing environment, minimizing the potential for academic dishonesty. The extension is available for free and falls under the category of browser add-ons and tools, making it an accessible option for educational institutions.