Developer's description:Cornice Portable is an image viewer packaged as a portable app, so you can view and show off your pictures from an iPod, USB flash drive, portable hard drive, etc. It has thumbnail previews, full screen modes, rotation, slideshow modes and more.
Cornice is a cross-platform image viewer written in Python + wxPython + PIL. It doesn't pretend to be complete, fast, or even useful, but I like it and it is the viewer I use on both Linux and Windows. It has been inspired by the famous Windows-only ACDSee.
Cornice Portable is a free, easy to use image viewer with lots of great features:
Detail and thumbnail view for images
Automatic recognition of images, with a variety of formats supported
Zooming and rotation
Good keyboard navigation
Image loading from zip archives
EXIF data support