Board Thread:Support Requests - Getting Technical/@comment-80935-20130713130629/@comment-1330470-20130731040442

Images can contain EXIF metadata: much of this is information like where the image was taken, with what camera, et cetera, things that don't affect the appearance of the image. However one piece of EXIF data is about rotation: it instructs programs interpreting the image to rotate the image.

Different programs are liable to treat EXIF-rotated images differently.