I am often asked about DPI, so here is a mini primer… DPI stands for Dots Per Inch. It refers to the number of dots that exist within an inch square of an image. The more dots, the clearer the image.  You can always subtract the number of dots, but not make up new ones that don’t exist which is why you can make a 300 dpi file into a 72dpi file, but not the other way around. So if you send your designer a low res file, they will not be able to make a large sign out of it because the image will not be crisp since those…