I use to edit my cover photos in facebook or my custom tab in picmonkey or photoscape and i have to make sure that the size is correct, before uploading the images in facebook, but i love to research all the time when i want to make my Job easy.
Internet is so you can learn a lot and i feel great when i learn something new! this tool that i discover helps me to make my Job easy creating cover photos and images for my custom tabs just follow this simple steps and learn pagemodo!
Easy Vhon 