I'm looking for a PNG viewer for Windows that is transparent for the transparent parts of the picture - that is, we can then see the other windows below.
It should be something like this:
Use case: I need to align my live micrsocope image precisely to a shape of a PNG image. I could draw the edges of the image with some screen scribbling software, or just display my shape as a PNG image with alpha channel. It seems very straightforward that a PNG viewer should support that, but I haven't been able to find one with this feature.
- (preferrably) free software which displays the alpha channel of an image as transparent.
- It would be nice to scale and freely rotate the image when viewing it
Research so far
- Coding something in this direction also seems possible (see e.g. here). But there has to be a out-of-the box solution!
- In this post, they suggest using software to make one window semi-transparent. This is a halfways solution for my needs (right now I'm using Glass2K)
- In the same post, they mention a software called Custom Desktop Logo which seems to be something in the right direction, but it doesn't work for me on Windows10.