Free or Pro image viewing app for Windows 10/11
Many zoom options in the zoom menu Easily view the image properties Part of the settings panel Thumbnail view (Pro version only)

Developer resources

Resources for developers including partial source code.

Partial source code

Some of the more generic source code for Pictureflect Photo Vieer is available on GitHub.

App scripting help

As of version 2.7.0.0, it is possible to launch Pictureflect Photo Viewer from a hyperlink or the command line.