Compare Chrome extensions: Youtube™ Thumbnail Preview vs Udemy Downloader

Short description
View youtube thumbnails with a single click.	Udemy downloader extension.
Full summary
Preview youtube thumbnails in a small chrome extension popup window. Just click on the extension while on a youtube video page, and it will load up the thumbnail image. Click on the image and you will be redirected to the largest size of the thumbnail.	In this user-friendly chrome extension, you can download the lecture videos in the course content you have already bought on Udemy collectively or individually. If you turn off the "ask where to save before downloading" feature in Chrome settings, you can download in a categorized way. (You can change the settings on "chrome://settings/downloads") Update notes : v3.1 - fixed stuck problem.