In Windows 10, when you hover over a taskbar button of a running app or group of apps, a thumbnail preview appears on the screen. For a single window it shows a single thumbnail, and for multiple windows it shows a number of thumbnail previews in a row. If you wish to disable these thumbnails in Windows 10, I will explain how it can be done with a simple Registry tweak.
If you are using vertical tabs in the Vivaldi browser, you might not wish to see thumbnails in its tabs, as they occupy too much space. In this article, we continue our Vivaldi customization tutorials by showing you how to hide thumbnails in Vivaldi when using vertical tabs.