KARAbuddy
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Install the KaraBuddy extension

Records your karabast.net matches, lets you scrub through past replays frame-by-frame, drop tags on key moments, and run solo deck-test sessions in one window. Works in Chrome and other Chromium browsers (Edge, Brave, Arc); Firefox is on the way.

Add to ChromeFree · Chrome Web StoreAdd to FirefoxComing soon

Once it's installed

Visit karabast.net and start a game — recording is automatic, uploads land on your My replays tab. To attribute past uploads to your account, run the one-time /claim flow.

Advanced: side-load a pre-release or build from source →

Most people should just use the Chrome Web Store button above. This path is for running a pre-release build, testing on an unsupported browser, or hacking on the extension itself. It loads the unpacked extension straight from disk — Chrome reads the files in place, so keep the folder where it is after installing.

  1. Get the extension files. Grab the latest karabuddy-extension-<version>.zip from GitHub Releases and unzip it, or clone pmossman/karabuddy and use the extension/ directory directly.
  2. Open chrome://extensions in a new tab (paste it into the URL bar — Chrome blocks links to it).
  3. Toggle Developer mode in the top-right corner of that page.
  4. Click “Load unpacked” (top-left, now visible) and select the folder containing manifest.json — for a clone that's karabuddy/extension.
  5. Pin it to the toolbar. Click the puzzle-piece icon in Chrome's toolbar, find KaraBuddy, click the pin. The popup starts/stops recording and toggles solo mode.