ImageView is a free and open-source image viewer for Microsoft Windows. It focuses primarily on ease of use and aims to remain lightweight.
ImageView is compatible with a wide variety of image formats, and is as such a perfect replacement for Windows’ built-in image viewer.
The application is particularly suited for all manga and comic book lovers as it is capable of natively browsing images inside an archive file (CBZ, CBR among others). In addition, ImageView supports a fullscreen reader mode that will automatically fit the images to the screen’s width to make the experience more comfortable.
In addition, ImageView respects your privacy. It does not collect data and runs entirely offline.
Finally, as the source code is available for all to see, feel free to browse the Github repository.