Cover Photo of Facebook which shows on your timeline when some one visited your wall. Many people stuck on it while uploading the cover photo due to issue of size. So for Ideal Cover photo, the size of picture or snap should be 851 Pixel in width while minimum 315 in height. Otherwise you can’t be able to upload it. But if size is large , now you can adjust it facebook photo adjustment tool.
Profile Photo of Facebook which is also DP ( Display Picture ). Now a days it’s becoming a competition whose profile photo is the most attractive and elegant.
Our Photo shows up as 160 Pixel in width while 160 pixel in height too. It’s tiny square. while you should minimum upload the picture whose size is 180px * 180px