I wanted to download all the photos from a Shutterfly Share Site, but neither the web or the native mobile app seemed particularly great. Sadly Shutterfly doesn't expose a public API, so I reverse engineered it to download all the photos.
It depends on grabbing the authentication token from the cookie once you are logged in to the website (as I didn't bother to implement the login also).
To download all photos in all albums:
> shutterfly_sites_api/api.py --site SITE --token TOKEN --directory DIRECTORY
site- name of the Share Sites (ie the first part of the domain name, ie https://SITE.shutterfly.comtoken- contents of theShrAuthcookiedirectory- where to download the photos to
As mentioned, Shutterfly doesn't actually have a public API, so I had to deduce it from their website. It's fairly simple though. All the data is exposed through https://cmd.shutterfly.com/commands/format/js. All the picture information can be fetched through ?site=SITE&page=SITE%2fpictures&v=1&usejwt_token=true. Each album can be found inside Shr.P.sections[0].groups and the photo information is inside .items in each group.