+**Ppi** (pixels per inch) quantifies the density of [pixels](/wiki/pixel) on a [digital display](/wiki/display) or within a printed image. It reveals how tightly individual points of light or ink are packed, directly influencing perceived sharpness and detail.
+## See also
+- [Resolution](/wiki/resolution)
+- [DPI](/wiki/dpi)
+- [Pixel Density](/wiki/pixel_density)
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