Gyaan Dub is a free Chrome add-on designed to enhance the YouTube viewing experience by providing Hindi dubbing for English captioned videos. This tool allows users to easily translate videos into Hindi, making educational content more accessible for Hindi-speaking audiences. With a simple interface, users can download the add-on and begin dubbing with just a click on the 'start dub' button located at the bottom right of the YouTube watch page.

The functionality of Gyaan Dub is specifically tailored for videos that are under 20 minutes in length. This limitation ensures that the tool remains efficient and user-friendly while still catering to a large range of educational and informative content. By utilizing this add-on, viewers can enjoy a seamless transition from English to Hindi, enhancing their understanding and engagement with the material presented.