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To help you visualize the relation between dimensions and resolution, look at the 3 penguins below.

The lower the DPI = the fewer the dots = the blurrier the print. The higher the DPI = the more the dots = the sharper the print. DPI is calculated using your digital image’s pixel dimensions and digital image size. Digital devices display images in pixels, and printers print images in dots. For printed images, resolution is expressed in DPI-dots per inch.ĭPI (dots per inch) is a printing term. For digital images, resolution is expressed in PPI-pixels per inch. Resolution expresses the density of pixels or dots in an image. Pixel dimensions express the total number of pixels along a digital image’s width (vertical) and height (horizontal). For example, the maximum file size of an image you can upload on Printful’s Design Maker is 200 MB.Ī pixel is a unit of measurement for digital images you see on a screen. It tells you how much space the image takes up on a disk or drive. Print size is the actual size of the image as it’ll come out printed on the product. It’ll help you get a better grasp of the rest of this blog and Printful’s print file guidelines. Let’s lay the foundation here and get into some terminology.