Yes it does. Several ways on a Mac to reduce the file size of an image using the software that comes with your machine. I always use Photoshop, but these Apple apps can do a lot for free. You can use the application called "Preview" you can crop your image. Simply click on the image and the crosshairs come up, click and drag, now go under "tools" and select "crop." Very easy, now do a "save as" and select jpeg (or whatever other file format you want) and use the slider to reduce the file size, also very easy to use. "iPhoto" is another Apple app that can do image manipulation, brightness and contrast, and a very cool and easy red eye fix that works very well. to reduce a file size in iPhoto, double click an image in the organize window that has all the thumbnails, when the image comes up as a single image you will see in the lower left "Constrain" in that dropdown menu is a list of file sizes. Also iPhoto will crop and image using the crop tool, very easy. Macs are made for design and images, right out of the box. Always use iPhoto to import images from your digital cam and not your camera's software, works much better than anything else out there. IMO.
Charles