Unofficial fan project, not affiliated with Bandai. Hover a One Piece Card Game card in a YouTube or Twitch video to see the card.
Users
36
store count
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
total ratings
Store rank
#117K
#104K among extensions
Version
0.4.1
updated 9 Nov 2026
Users
monthly, 1 months
Latest, 12 Nov 2026:36 usersMove the mouse over the chart for any month
Ratings count
monthly, 1 months
Latest, 12 Nov 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Kenbunshoku
Kenbunshoku is for watching One Piece Card Game videos. Rest the pointer on a card in a YouTube or Twitch video, and the card's picture appears beside it, enlarged. The picture may be a different printing of the recognized card.
• Runs on supported YouTube pages (watch pages, live pages, and youtube.com players embedded in other websites) and on Twitch (live channels and past broadcasts on twitch.tv).
• No streamer setup is needed: it recognizes supported cards from the video picture, in your browser.
• Hover only. It shows a card when you point at one and stays out of the way otherwise. It can leave uncertain matches blank, and it can also miss cards or show an incorrect match.
• Card hovers are on for every supported video; the switch in the toolbar popup turns them off everywhere. Nothing is analyzed before the pointer comes over a video.
• Card pictures follow your browser's language where Bandai publishes the card in it (French today); otherwise English.
• A card size slider in the popup, from 70% to 130%.
Supported cards: Bandai's official English card list, up to OP-17, EB-04 and EB-05, the starter decks up to ST-36, and PRB-01 and PRB-02. Some cards and promotional printings are missing. New sets are added without an extension update once they are on Bandai's official English card list. Cards from unreleased sets can be mistaken for similar supported cards.
Privacy: card recognition runs locally; video frames are never uploaded. The extension reads the video picture and your pointer position over the video to provide card hovers. It keeps no list of the channels or videos you watch. It requests settings, card images and, where Chrome has WebGPU, an approximately 60 MB card-feature file from cdn.kenbunshoku.com, with optcgapi.com as the image fallback. Those hosts receive your IP address and the requested file, but not the video's address. No accounts, analytics or advertising. Privacy policy: https://github.com/ryangswe/kenbunshoku/blob/main/PRIVACY.md
Free and open source (Apache-2.0): https://github.com/ryangswe/kenbunshoku
Questions and help: https://discord.gg/dsmmyU6RTG. Bug reports: https://github.com/ryangswe/kenbunshoku/issues
Kenbunshoku is an unofficial fan project, not affiliated with Bandai. The One Piece Card Game, its card names and its card art belong to their owners.