What does resolution refer to in relation to an image?

Resolution, in the context of an image, specifically refers to the size of the image as measured in pixels. This measurement indicates how much detail an image holds; the more pixels there are, the higher the resolution, which typically leads to clearer and more detailed images. When a resolution is described—for instance, 1920x1080—it signifies that the image has 1920 pixels in width and 1080 pixels in height.

Understanding resolution is critical, especially in graphic design and multimedia, since different resolutions can significantly affect the quality of an image when displayed or printed. Higher resolution images are usually required for larger prints to avoid pixelation, while lower resolutions may suffice for images viewed on screens or in lower-quality formats. Thus, recognizing that resolution is strictly about pixel dimensions is essential for anyone working with digital images.