The extension is designed to pronounce selected text, which can be helpful to people who struggles with eyesight, read small-size text, doing 2 deals at the same time (like listening some text and writing email). You would need to: - select text you want to pronounce - put your mouth in this area - right click - Pronounce If you want to stop speech, you can do it at anytime by right-clicking on any other place (except selected area) > Stop speech Additional functionalities that are available: change voices (that are available for your operating system), adjust enqueue, pitch, rate and volume.