Image.NET

Image.NET is a tiny piece of software whose purpose is to display images in a simple and distraction-free environment focused on content loading speed and low impact on system resources.
It doesn't contain the customary options and customization properties of most graphic editing tools, since it's aimed at users looking for a straightforward method to open files and view pictures.

Lightweight and simplistic image viewer

The graphical interface is minimalistic, made from a single window that displays four buttons for opening files, entering fullscreen mode, accessing the help panel, as well as for quitting to the desktop.
Unfortunately, the software program's not explicit regarding the supported file types. According to our tests, it's compatible with JPG, PNG, BMP, TIF and WMF format.
It's possible to view the next or previous photo in the current directory, as well as to enter fullscreen mode to get a better view of the file contents. Keyboard shortcuts are supported for these commands, and they are listed in the help window.

No setup required, besides .NET Framework

The application's packed in just one file that can be saved anywhere on the disk or copied to external storage devices to launch Image.NET on any PC with minimum effort.
Unlike many installers, it does not update the system registry with new entries, nor does it generate files on the disk without your permission. On the other hand, it depends on .NET Framework, so you must have this software framework installed.

Evaluation and conclusion

It had low impact on the workstation's performance, using low CPU and RAM. The app was stable throughout its runtime, without hanging, crashing or prompting errors.
Although it doesn't have additional navigation controls, such as zoom, Image.NET offers a clear-cut solution for loading multiple types of images while having minimal impact on computer performance.