Bilibili (stylized in all lowercase), nicknamed B Site (Chinese: B站, romanized: B zhà n), is a Chinese online video sharing website based in Shanghai where users can submit, view, and add overlaid commentary on videos.
Bilibili hosts videos on various themes, including anime, music, dance, science and technology, movies, drama, fashion, and video games, but it is also known for its extensive kuso-style parodies by subcultural content creators. Since the mid-2010s, Bilibili began to expand to a broader audience from its original niche market that focused on animation, comics, and games (ACG), and it has become a major Chinese over-the-top streaming platform serving videos on demand such as documentaries, variety shows, and other original programming.