PicView win-x64 self-contained.zip and PicView win-x64 Framework-Dependent.zip are portable versions that doesn't require installation, just extract and run it.
PicView win-x64 Framework-Dependent.zip, is a nice and clean single .exe, but requires requires .NET Core 3.1 installed to run it.
Download PicView.msi if you want to install it.
Change-log
Added functionality to apply image as wallpaper or lock screen with shader effect applied. Copying images to clipholder will also have shader effect applied.
Updated main user interface
Added a resize grip to the main window
Improved preview when using drag and drop
Improved sizing algorithm for small screen sizes and high Windows DPI scaling
Fixed a bug that caused images in gallery to load twice
Zooming speed has been increased when zooming further in
Fixed a bug that caused slideshow to crash
Fixed various other bugs