DPI stands for “dots per inch” and is a measurement of the resolution of an image or printed output. DPI refers to the number of dots that are used to create an image in a given area, typically measured in inches. A higher DPI means that there are more dots per inch, resulting in a higher quality image with sharper details and smoother lines. DPI is often used in graphic design, printing and digital imaging to ensure that images are of high quality and suitable for their intended use. The optimal DPI for an image or print output depends on the size of the image or print, the viewing distance and the type of output device.