Supply high-resolution images for all artwork in your app, for all devices your app supports. The version of this image would be 200px × 200px, and the version would be 300px × 300px. High-resolution displays have a higher pixel density, offering a scale factor of 2.0 or 3.0 (referred to as and As a result, high-resolution displays demand images with more pixels.įor example, suppose you have a standard resolution image that's 100px × 100px. A standard-resolution display has a 1:1 pixel density (or where one pixel is equal to one point. The coordinate system iOS uses to place content onscreen is based on measurements in points, which map to pixels in the display.
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