The "S" key on your keyboard is the shortcut for "Skip" on Prime Video.

You can now hide spoilers for episodes you haven't watched yet without having to manage bookmarks or the thumbnails on the home page.

To use this extension, just open the Amazon Prime Video app on your computer or laptop, click on "My Movies" or "My TV" to get to the series list, and then select a movie or TV show.

Now you can see the description of the episode and the trailer, and if you're still watching the series, you can see the episode intros and recaps.