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Kenbunshoku

ExtensionGames18 users
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Overview

Unofficial fan project, not affiliated with Bandai. Hover a One Piece Card Game card in a YouTube or Twitch video to see the card.

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. • Turn it on per channel with the button in the player. One switch in the toolbar turns off the player button and all video analysis. Supported cards: Bandai's official English card list, up to OP-17 and EB-04, the starter decks up to ST-36, and PRB-01 and PRB-02. Some cards and promotional printings are missing. New sets require an extension update and are not supported until included in a release; future updates are not guaranteed. 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, your pointer position over the video and the page's channel or video id to provide card hovers, and remembers the channels and videos you turned on, on your device. 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.

Details

  • Version
    0.1.0
  • Updated
    October 18, 2026
  • Offered by
    Cardvision
  • Size
    16.05MiB
  • Languages
    English
  • Developer
    Email
    kenbun.support@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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Kenbunshoku has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Kenbunshoku handles the following:

Web history
User activity
Website content

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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