A cross-platform desktop app, written in Mono that would download (all or selected) photos from your photostream in their selected size along with their description, title and tags.
When I try doing anything with these json files using exiftool or exiv2 the response is always "file format error" - so basically it's just like not having the json file at all.
@dixonge What are you trying to achieve? exiv2 will work with tags embedded in photo files, not sidecar JSON. I think extra tooling is needed if you want to write JSON file fields back to original photo files.
When I try doing anything with these json files using exiftool or exiv2 the response is always "file format error" - so basically it's just like not having the json file at all.