Show image on desktop I want to show a photo on my desktop. 

I don't want it to be my desktop background, or my screen saver, but I'd just like it be on the desktop so I can look at it, bigger than a thumbnail (maybe a couple of inches by a couple of inches).

What's the best way to do this? I can see how to resize every thumbnail, but that's not what I want.

I'd rather not run an app to do this - is there any way I can do this within OSX?
Geektool does exactly that

I think this is the correct download url https://www.tynsoe.org/v2/geektool/ but I‘ll recommend you to go find find it by yourself on Google or wait for someone to approve the link with an edit or a comment.