Thanks to andy_jp for:
Title: Image-ExifTool.tcz
Description: A command-line application for reading and writing metadata.
Version: 8.20
Author: Phil Harvey
Original-site: http://www.sno.phy.queensu.ca/~phil/exiftool/
Copying-policy: GPL/Artistic License
Size: 2.9 MB
Extension_by: andy_jp
Comments: Phil Harvey's tool for reading and writing metadata.
ExifTool is especially useful for reading image Exif data.
For example, to view the Exif data of a file named "cats.jpg":
exiftool cats.jpg
This extension is PPI compatible.
Change-log: ----
Current: 2010/06/06 - Extension Created (Version 8.20)