Can't see my bookmark thumbnail picture icon in chrome on my Samsung GS4

[kenzikat14]

Hello everyone. Can someone please help me figure out how to display the thumbnail picture icon in my bookmarks list? It says the name of the site and a little bitty icon of the site next to the name and a huge grey rectangle above that on each square. I want it to look like the widget looks like before you take it out of the widget folder and place it on your home screen. Here is a picture to show you what Im talking about:

 

[Gregor Smith]

Visit the pages in chrome, it then sets the thumbnail until the cache refreshes, my highly unscientific guesstamation on this is roughly ever 24 to 48 hours