Coolpreviews was one of the best add-ons ever. I looked a lot and never found anything close and had given up hope. Simple Link Preview is a close replica. Yes, its basic ie simple, yes there aren't any ways to customize it, HELL YES! it pops up most links in a preview window to get a quick glimpse (Maybe some links / pages don't support it so not blaming Simple Link.) A huge thanks to the developer / team on putting this out there. Its a very nice improvement in my browsing experience. TY!