FAQ “It’s actually PPI, not DPI!” There are arguments for both terms. In general PPI is a bit more correct but DPI is more commonplace, hence its usage on this site (also ppi.lv wasn’t available :P). If you are interested, you can read more on this in the Wikipedia article about Pixel Density. In more recent terminology, DPI is often used for the actual device pixels and Dots Per Pixel (dppx) for