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DPI vs PPI – What is the Difference?

There is much confusion out there about the acronyms DPI and PPI. This confusion is understandable, given that people often use the terms in error interchangeably. So what do DPI and PPI mean, and how do they apply to printed photographs and digital image files? In this article, we will answer these questions and clear up any misconceptions you may have about the abbreviations.

A blurred image of horses demonstrating DPI vs PPI

Let’s start with some definitions.

What is DPI?

DPI stands for dots per inch and refers to the resolution of a printer. It describes the density of ink dots placed on a sheet of paper (or another photographic medium) by a printer to create a physical print. DPI has nothing to do with anything displayed digitally! And this is where a lot of the confusion occurs. More on DPI in a bit.

What is PPI?