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Hide watched videos on YouTube

Adds an ability to hide thumbnails of videos you've already watched.

These are versions of this script where the code was updated. Show all versions.

  • v1.3 2023-07-20

    1.3: As a stopgap measure, greying out watched thumbnails can now be disabled by opening developer console (Ctrl + Shift + K on Firefox, Ctrl + Shift + J on Chromium and derivatives), typing localStorage.setItem("dontGreyOutWatchedThumbnails", true) then pressing Enter, and reloading the page. I might make a GUI for it in the future.

    1.2: Fixed videos being incorrectly marked as watched. Also, watched videos are reverted to being clickable (this was a bit confusing), but still greyed out.

    1.1: Watched videos are now non-clickable and greyed out.
  • v1.2 2023-07-20
  • v1.1 2023-07-13
  • v1.0 2022-12-10