Youtube List View is a Firefox extension designed to optimize the viewing of YouTube content. It offers a range of customizable features that allow users to tailor their video browsing experience. Key functionalities include the ability to show or hide the 'Most Relevant' shelf, adjust thumbnail sizes, and manipulate the horizontal positioning of the video list. Additionally, users can toggle channel avatars and choose their placement, further enhancing personalization.

The extension also enables users to display video descriptions, with options to customize font size and the number of lines visible. Users can adjust the appearance of video length text and backgrounds, as well as control the visibility of livestreams and shorts. This subscription-based tool provides a comprehensive suite of features aimed at improving the overall usability and aesthetics of YouTube, making it a valuable addition for avid users.