Let’s face it, rotating a bunch of images can be a time or a money sink. You either have to open each image one at a time, rotate them manually, and then seave them, one at a time, or you need to purchase an image editing program like Photoshop or Fireworks. And don’t get me started on figuring out how to do this in Gimp, a free, open source image editing program.
Turns out, though, you’ve already got all you need right on your Mac. Batches of image can be rotated all at once with Preview.