Bili Comments Sidebar is a Chrome extension designed to improve the way users interact with comments on Bilibili videos. By adding a dedicated comment sidebar next to the video, users can easily browse comments without obstructing the video playback. The sidebar features a Reddit-style hierarchical view, allowing users to see replies in a clear and organized manner. It also supports full reply loading, enabling users to access all comments seamlessly.

Additional features include dual sorting options for main comments and replies, a keyword search function that highlights relevant matches, and memory for comment reading progress, which ensures a smooth user experience. The sidebar width is adjustable, and comments from the video uploader are highlighted for easy identification. Privacy is prioritized, as the extension does not collect user data and communicates solely with Bilibili's official API.