Gistill

gistillorg

Get Gists and insights from YouTube videos on the video page directly. Just pin the Gistill extension to the address bar, and click on the extension when you want to look at the gist for a video. Gistill helps improve your productivity by enabling you to quickly grasp the content of a video. Before watching the video, you can go through the gists quickly to gauge if the video content is useful for you. Also, you can benefit from looking at the video from different perspectives, by reading through gists created by peers.

Screenshots from Chrome Web Store