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If you have ever watched a concert on Bilibili, you know how thrilling it is to see real-time comments fly across the screen. Those “danmaku” bullets do more than entertain: they convert passive viewers into an on-screen crowd that laughs, cheers, and reacts together. Danmaku Overlay for YouTube delivers the same experience to any YouTube Live video,
One-click toggle – Tap the toolbar icon on any YouTube Live page to inject or remove the overlay. A badge flips to ON, so you always know when danmaku is active.
Real-time bullet rendering – A tiny content script watches the chat column with a MutationObserver, forwards new lines to the main frame, and animates each message across the video at 60 fps using requestAnimationFrame.
Practical benefits Stronger engagement – The moment bullets start moving, lurkers speak up. On-screen comments trigger jokes, memes, and instant feedback that makes streams feel communal.
Screen-capture-ready chat – Streamers who post highlights or replays can keep chat visible without OBS browser sources or CSS cropping—Danmaku Overlay is already baked into the pixels you record.
Lag-free performance – GPU-accelerated transforms keep animation smooth even on laptops or while a dozen tabs run in the background.
Who will love this extension?
User group Anime & gaming fans Re-create Bilibili/Nico bullet culture directly on YouTube Live.
Small streamers Highlight vibrant chat without extra software; viewers feel recognised when their words glide across the video.
Watch-party hosts & ESL classrooms Overlay real-time reactions or quick vocabulary notes while learning or co-viewing.
Event organisers Encourage audience participation during virtual concerts, launch events, or town-halls by making chat visually unavoidable.
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