If not jhead (http://www.sentex.ca/~mwandel/jhead/) is a great tool at only 64kB. It's public domain, fast, comprehensive, etc.
The Ubuntu executable from the above site runs fine on Puppy 2. I added a script to call jhead in an xterm and made that script an option for photos in Rox so that I can see the photo info easily. (Rolling the mouse over the image would be a better way to do this but I can't see a way to get Rox to do that.)
It's a good adjunct to jpegtran and mogrify.
Sample jhead output:
File name : 0805-153933.jpg
File size : 463023 bytes
File date : 2001:08:12 21:02:04
Camera make : Canon
Camera model : Canon PowerShot S100
Date/Time : 2001:08:05 15:39:33
Resolution : 1600 x 1200
Flash used : No
Focal length : 5.4mm (35mm equivalent: 36mm)
CCD Width : 5.23mm
Exposure time: 0.100 s (1/10)
Aperture : f/2.8
Focus Dist. : 1.18m
Metering Mode: center weight
Jpeg process : Baseline