"Almost no site seems complete these days without an image
gallery, which displays thumbnails of many images in on a single
main page. When you click on any image, you bring up a page with a
larger version of the image. My favorite way to create image
galleries is by using shalbum, an elegant shell script that uses
ImageMagick to generate Web albums.
"ImageMagick is a suite of command-line tools for creating and
manipulating bitmap images. It can be used to create simple
graphics, complex image mosaics, and even animations..."