The WebDesignerDepot has a great writeup on “The Myth of DPI” and how people unfamiliar with web design typically size images in inches, thinking that the DPI is a useful figure in sizing images for the web.
Images on the web are measured in pixels. Yet many people go through the trouble of setting their images to 72 dots per inch (DPI). The process of sizing them is often misunderstood.ci
The misconception about resolution in digital images, especially ones bound for the web, is that they must meet a certain number of dots per inch.
