Speed Dial short cut images
Speed Dial short cuts take a visual snapshot of the web page as the default image. Sometimes this is fine, sometimes it isn't. It would be great if users could edit the short cuts and specify a generic image for a website, similar to what comes with the predefined short cuts (Facebook, Twitter, et cetera).
You can often improve the Thumbnails by opening the page, zooming in, then refreshing the Speed Dial thumbnail.
@GreatLand1959 You can change the speed dial thumbnails, just not from Vivaldi's native interface. See here for a guide on how to do it. Alternatively, you could install Vivaldi Hooks which will allow you to change speed dial thumbnails from your context menu.