Thumbnails are okay, but if you’re someone who likes nice, big visuals, Hover Zoom can be a handy tool. The concept is simple: hover your mouse over a thumbnail and a full-sized version of the image will pop up, letting you get a good view without having to open a new page. It’s not without its problems, however. It can occasionally take a while to load each picture and can embarrass you if you accidentally hover over something that’s NSFW. Still, it can make browsing through Google Images or Facebook a lot more fun.
Link: Hover Zoom