When you want to rotate a JPEG image or photo, most image editors decode the image, rotate the bitmap and then reencode the JPEG. This process slightly decreases the final image quality. But, unlike other tools, this does not recode your image but performs a special lossless block transformation. As a result, the rotated image has exactly the same quality as the original. Two possible thumbnail quality/speed settings, shell integration feature (this allows you to rotate a JPEG image through a right-click on the file), and EXIF-data display. Free, simple, and useful.