A measure of an image’s or printed output’s resolution refers to how many individual dots of ink or toner can fit within a one-inch line. Here’s a breakdown of its different contexts:
- Printing: DPI refers to the number of ink droplets a printer can place in one inch. A higher DPI generally results in sharper and more detailed prints.
- Scanning: When scanning an image, DPI indicates the number of dots the scanner captures per inch of the original image. A higher DPI setting during scanning will capture more detail and result in a larger file size.
- Digital Images: While digital images don’t have a physical DPI, they have PPI (Pixels Per Inch), which is similar in concept. PPI determines the resolution of an image on a screen.
Important Note: DPI and PPI are often used interchangeably, even though they refer to slightly different things.
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