Pineapple Pictures gives you a simple, cross-platform, portable, and Open Source image viewer.
It is really just a minimalistic image viewer that provides only the essential things needed to view images. The interface has no bells or whistles, and your images must be drag n' dropped in. But it will allow you to flip through multiple images from the same location. A few items are contained in the right-click context menu like copy, stay on top, protected mode, configure, etc. All aimed at simplicity while viewing your image(s). It allows you to view an image's properties, an option included in the right-click context menu, like its dimensions, aspect ratio, file name, item type, path, size, date created and modified.
The fact that it portable and light on resources, due in part to its limited features, makes it a good choice for any situation where you need to shuffle through images quickly.