A Viewer for Windows version 1.8 has now been released, including these changes:
Upgraded to be a 64-bit program, which means A Viewer for Windows can now work with much larger images. The program will however not be supported on 32-bit versions of Windows from this release forward. Of note: if you are using Windows 11 you are using a 64-bit version of Windows as there is no 32-bit version of Windows 11.
Improved performance, most noticeable on larger files.
Added a ‘Mirror’ (image reverse) feature to the Viewer window.
Other corrections and improvements.