AcFun HTML5 Player is a third-party player designed specifically for AcFun, offering a highly similar interface to the official Flash player. This Chrome add-on aims to provide a smooth and seamless video playback experience for AcFun users.

One of the standout features of AcFun HTML5 Player is its integration of the openBSE high-performance danmaku engine. This ensures that the display of danmaku, or scrolling comments, is silky smooth and enhances the overall viewing experience. Additionally, the player supports automatic video quality adjustment, allowing for seamless transitions based on network conditions, eliminating buffering frustrations. Users also have the ability to adjust the playback speed, adding a touch of whimsical fun to their video watching. Another convenient feature is the inclusion of a page-switching button, allowing users to switch between different parts of a video without having to refresh the page or exit full-screen mode.

While AcFun HTML5 Player currently does not support advanced danmaku features, the developer promises more functionalities in future updates. It is worth noting that this program is an open-source project released under the MIT license. For any inquiries or feedback, users can contact the developer via email at The project's source code can be found on GitHub, and users can report any issues or provide feedback through the project's issue tracker.

Version 3.6 Update:

• Added the ability to customize font, mode, and color for sending danmaku.

Version 3.5 Update:

• Updated the danmaku server interface.
• Added a loading animation.
• Fixed the issue of videos not loading after a period of time.
• Optimized player logic.