Popup VideoWebExtension is a Firefox add-on that allows users to watch YouTube and Twitch videos in a separate, pop-up window. This subscription-based tool is designed to improve the multimedia experience by enabling users to pop up videos from links or thumbnails effortlessly, thus facilitating multitasking. With a simple right-click on a video link or using the extension's icon over thumbnails, users can launch their desired videos in an independent window, allowing for uninterrupted viewing while engaging in other tasks.

Despite its practicality, the extension does face some limitations stemming from the WebExtension API. Users are unable to resize the pop-up window or set it to always stay on top of other applications. Nevertheless, Popup VideoWebExtension remains a useful tool for users looking to enhance their video viewing experience on platforms like YouTube and Twitch, providing an efficient solution for seamless content consumption.