Where does xfce4-screenshooter save by default?

I did a screenshot and also saved it, but I'm unable to figure out where it is. Looking into [the official docs](https://docs.xfce.org/apps/xfce4-screenshooter/usage) didn't tell me more and I also didn't find something quickly searching both the SE network and the whole internet. So this Q/A might provide an answer to the next person to be in the same situation. To reproduce run xfce4-screenshooter, select anything and click on Open with a program. I chose *Gnome Paint Drawing Editor*, but this program also didn't (easily) tell me the location of the file. I failed save as but need the file.