The Cantonese Popup Dictionary is a free Chrome add-on designed to enhance the learning and understanding of the Cantonese language. By simply hovering over Chinese words, users can instantly view their definitions and pronunciations in a convenient pop-up window. This tool employs Yale romanization for pronunciation, complete with tone numbers, making it easier for users to grasp the phonetics of the language.

This extension is built upon the existing Perapera Chinese Popup Dictionary framework, utilizing data from the Cantonese CEDICT project. While it is a straightforward adaptation, it effectively serves as a valuable resource for learners of Cantonese, providing quick access to essential vocabulary and pronunciation guidance without requiring extensive setup or configuration.