Preview handles nearly all popular image formats including JPEG, TIFF, PNG, and GIF. Photoshop can run as high as $199 for the latest version, and Elements still costs about $69. Though these applications are great solutions, they can also be costly and somewhat complicated for new users. Many tips floating around the Internet will suggest using Adobe's Photoshop or Photoshop Elements to accomplish tasks like resizing and adjusting image resolution. And best of all, it comes free on every Mac, bundled with OS X.
Using Preview, you can easily adjust your photos and get them ready for print, projects, and sharing.
One of the unsung heroes of Apple's Mac OS X is the simple, yet incredibly powerful, Preview application.