Photo Zoom for Facebook is a free tool that allows you to view any photo or profile in full-size mode without the need to click a second button. Once you install the Photo Zoom for Facebook Chrome extension on your device, you can start using it immediately. You don't need to make any other settings or add any information to your Facebook account, you just need to install the Photo Zoom for Facebook extension to get started. To use this tool, you don't need to have any previous knowledge about it or Facebook. All you need to do is to hover over the photo and it will be displayed in full-size. Once you close the photo, it will be displayed in normal size again.