@lesbianhacker You might be able to include an image in a GPX file (It /could/ be an extensible format!) *But* what are you going to do with that then?
You can upload a GPX trace to #OpenStreetMap , but that definitly doesn't do anything with images.
If you don't want to upload images, you could just make lots of #OSM Notes? "Here is bus stop 123 on route 45, there is a shelter and electronic passenger display" You can do that with an OSM account or anonymously, and other OSM mappers can see
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