Good point. Phone cameras can certainly betray you, if you have location info embedded. I actually did mine up in MS Word, hit Print Screen, and pasted it into MS Paint.
I learned the hard way, the first time or two that I sold a car on CL... they will spam the living daylights out of your phone if they get your number. Dealerships, bots, "we'll sell it for you for a fee" places, all those scumbags.