A good YouTube thumbnail can help a video gain views. Insider asked four professional designers how to make a successful one, from structure to color.

But the most used and high-end version of YouTube thumbnails is created with Photoshop. Let me show you exactly how to make a YouTube thumbnail with Photoshop without technical skills or design ...

The iOS app also allows you to add a custom thumbnail. Adjust audience settings; YouTube will ask if your video is made for kids. Adjust age restriction settings.

Learn how to add thumbnail to video in PowerPoint. You can insert a YouTube Video Thumbnail in PowerPoint, by following this tutorial.

In YouTube's case, the algorithm assimilates the descriptions and keywords of videos you watch, adding their "distinctiveness" to what it presents to you. This is what happened to Nancy.