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DPI (PPI)

Printing and on-screen layout

An acronym that stands for dots per inch and refers to an image’s resolution. (PPI stands for pixels per inch and is used for on-screen resolution.)

One must achieve a certain minimum resolution, depending on the medium, for an image to appear clear in print or on screen.

An on-screen image must be 72 ppi, because that is the number of PIXELS that comprise a linear inch of computer screen.

A printed image must be at least 300 dpi. For newspapers, 250 dpi will suffice.