I took a screenshot in Europa Universalis 4 but I can't seem to find the location of the image file! Where is it?
There are two kinds of screenshot in this game.
You can either take the usual Steam screenshots with F12. This is explained here.
It is also possible to take a screenshot of the whole map with F10. In this case, the file will be located in
Documents\Paradox Interactive\Europa Universalis IV\Screenshots.