You can select "download all" from the drop down menu in Google Photos and that will give you the original photos with the geotags. That should do the trick for

You can select "download all" from the drop down menu in Google Photos and that will give you the original photos with the geotags. That should do the trick for your backups anyway without the need for an API (at least if you're happy to download one folder at a time anyway). And yes, I agree that if the API did support getting the geotags that would make tools like this one easier to implement.