This is a very basic image file viewer and slide show program.
Features:
view images in many formats
save images in many formats
slide show
canvas resizing
image scaling
rotation in 90 degree increments
mirroring
inversion, convert to web palatte, convert to grayscale
Photoshop it's not and it's not terribly useful on a Macintosh which, after all, has Graphic Converter. It does, however, fills a niche on Windows. Think of Graphic Converter on a diet. The Windows version requires Quicktime.