exiftool Reviews

I use it for tagging all my photos with keywords and geotags found by the Google Image API and to align Picasa and Microsoft person tags. I can also transfer the tags of one photo to another if I have done some destructive editing of an image, e.g. imported and exported it to and from Mathematica.

Simple to install & simple to use, including from the command line. Extracts and displays a list of field values from descriptors of many types of media files. It has a zillion options but I needed to use almost none.