I'd like to factory reset my Lollipop smartphone. But I have many pictures, downloaded from the web, shared by friends or taken with the stock camera, which I have tagged with my contact names, added google map geolocation, categories. I've done all of that within the native Android gallery app.
If I copy such images to another folder, the copy does not show the infos I previously added. It is the same if I make a copy on my laptop. So, is there any app to export those metadata, which are not supposedly included in the image file?