How to Batch Rotate Image Files in Mac OS X Quickly with Preview
The Mac OS X Preview app is able to perform rapid batch image rotation on groups of picture files. This works quickly and with almost any image file formats, so long as Preview is able to open the image files it can be rotated in a bulk function.
Read the accompanying article here and you can learn how to do this even faster with keyboard shortcuts to rapidly perform batch rotation on groups of images selected within the Mac Finder and opened within Preview:
http://osxdaily.com/2012/05/11/batch-rotate-a-group-of-images-with-preview-for-mac-os-x/
Preview is also able to perform batch image file conversion, changing the image format from one type to another as shown in this video:
https://www.youtube.com/watch?v=X0rQP1XMlwY
Or you can read the instructions on batch format changes as described here in our excellent written tutorial:
http://osxdaily.com/2013/01/16/batch-image-conversion-mac-os-x-preview/
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