cf723436__고화질_그림_지침___Wikimedia_Commons__분류
[공통적인 문제점들] 낮은 해상도 그림 크기 줄이기(Downsampling) [규정] Images should have at least 2 real megapixels of information, for example, 1600x1250. For “easy to take” images, reviewers may choose to demand more if the image would benefit from it. Images should not be downsampled (sized down in order to appear of better quality). Downsampling reduces the amount of information stored in the image file. [토의] Graphics located on Commons may be used in ways other than viewing on a conventional computer screen. They may be also used for printing or for viewing on very high resolution monitors. We can't predict what devices may be used in the future, so it is important that our best pictures have as high a resolution as possible. [예시자료] This photo is of high quality and just above the 2 megapixel minimum. This image is only 1.7 megapixels. [분류] 
그림 크기
Commons:고화질 그림 지침 - Wikimedia Commons