Some links can only be accessed through a VPN. I have thousands of bookmarks that also have names but I would still like to see the icons before clicking the l

Some links can only be accessed through a VPN. I have thousands of bookmarks that also have names but I would still like to see the icons before clicking the link. Sometimes the name doesn't hint at what kind of resource the bookmark was at a glance. Is it a youtube video, is it an article? I already have access to that information at the time of bookmarking. I don't want to lose it and then have to get it again.