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How to upload a custom GIF

Beyond the 12 built-in cats, you can upload any GIF and the extension will use it as your scrubber. The file is stored locally in your browser — nothing is uploaded to a server.

Watch the walkthrough

  1. Find a GIF you like

    Browse GIPHY, Tenor, or Imgur for an animation. Smaller GIFs (under a few hundred kilobytes) feel snappier on the scrubber, but there's no hard size limit. Make sure the file you download has a .gif extension.

  2. Open the extension popup

    Click the Nyan icon in your toolbar. The cat grid appears with an upload tile in the top-left — a dashed border with a + icon and "Upload GIF" text.

  3. Click the upload tile

    A native file picker opens, filtered to .gif files. Pick the GIF you just downloaded and confirm. The extension reads it in the browser, stores it locally, and adds it as a new tile in the grid.

  4. Your GIF is now your scrubber

    The uploaded GIF is selected automatically and pushed to every open YouTube tab. Open YouTube and move the scrubber to see it in action. To swap to a different GIF, click the upload tile again — the new file replaces the old one.