My goal is to find the minimal photo size that properly represents an image to reduce server storage demands but also reduce Voom upload times.  Smartphone and tablet users likely won't see a lot of differences, but folks with computers and large monitors may.   Here is the same photo in four different sizes: 300 Pixels Wide, 59KB 500 Pixels Wide, 106KB 700 Pixels Wide, 170KB 900 Pixels Wide, 256KB