If you are like me with tens of thousands photos in Flickr which is about to stop 1TB free storage service, moving these photos out would be a very challenging task.
Flixport is an open source command line tool that bulk-copies photos from Flickr to Amazon S3, Google Storage or your local computer.
Flickr is terminating the free 1TB storage service in February 2019. Unless you convert to a premium user, Flickr will only keep 1000 photos and purge others at some point in February. To backup my own photos I evaluated all existing solution and none worked for me. Luckily, being a software engineer, I could write code to work around difficulties.
Flixport is an open source, you can always check out the code if you are curious.