Currently each bookmark has an icon or favicon assigned to it. This is a good solution for a start page, where we gather a lot of links to frequently visited pages. Each page has its own unique icon/favicon. But when you have a lot of links to different articles on one tab, icons alone are not enough. Some articles may come from the same source and then have the same icons. In this case, it is necessary to read long titles to find the right article. Looking at the image next to the bookmark title makes it much faster to find the article you are looking for.

Adding a featured image from the article would be a super additional option. Such an image should be loaded automatically from the added page. Bookmarks with images rather require a wide widget to be displayed in a single column, but that's how you can do it in Tixio right now.