A simple picture editor needed
I'm looking for a simple, possibly free, picture editor. I need it for a Mac Mini, 10.9 OS, to prepare digital camera pictures for items to be sold on flea-Bay.
So I don't need the complexity of Photoshop Elements - I just want to crop and re-size, adjust color, brightness, contrast and little else.
Any recommendations ?
OS X Mavericks (10.9), iPad Air, iPhone 5s, Cube, iBook G4