TinyViewer 1.04

the author of this app says:

TinyViewer is a small program for viewing images on the Palm(tm) handheld, and it supports the ImageViewer format.

As a new feature, TinyViewer supports a zooming-out option to help you view large images.

Another advantage is that it is designed to be much smaller (7k vs. 30k), thus preserving your precious memory.