Multiselect for YouTube is a Firefox extension designed to enhance your experience when managing YouTube playlists. This subscription-based tool streamlines the process of selecting and organizing videos, allowing users to save time and effort. With the latest version 3.0, the extension supports the new Manifest V3 interface, ensuring compatibility with the latest browser updates. The redesigned user experience incorporates both dark and light display options, matching the YouTube interface seamlessly.

Key features include clearly highlighted selected videos, an icon button for toggling multiple selections, and an action bar for quick access to functions. Additionally, the context menu and keyboard navigation enhance usability, while tools for copying, cutting, and pasting videos simplify playlist management. Users can also find duplicate videos easily and apply filters when selecting videos, making it a comprehensive solution for YouTube users.