Mac batch image conversion FAQ: How can I “batch convert” images from one image format to another on a Mac, such as BMP to JPG, or PNG to JPG?
As I mentioned in my earlier Mac batch image resizing tutorial, the Mac OS X Automator application is my new best friend. Besides letting you easily batch resize images very easily, the Automator also lets you easily batch create thumbnails for images, and also lets you convert images from one image format to another (BMP to JPG, PNG to JPG, etc.).
Here’s a quick look at how to use the Mac Automator to “batch convert” images from one file format to another, including image file formats like BMP, GIF, JPEG, and PNG.