Pixel Density

Noun · Development

Definitions

  1. The number of physical pixels per unit of length on a display, typically measured in PPI (pixels per inch). Higher pixel density produces sharper images; web and mobile developers use device pixel ratios (e.g., 2x for Retina) to serve appropriately sized assets.

    In plain English: How many tiny dots are packed into each inch of a screen — more dots means a sharper, crisper picture.

    Example: "The icons look blurry on the new MacBook because we're only serving 1x assets — we need @2x and @3x versions for high pixel density screens."

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