If you open the link for the first time, it works best if you do this while you have a WiFi connection (because it’s faster to download the photos).
iPhone / iPad / iPod: Just follow the instructions once the app comes up.
Android phone and tablets:
1. Add the page with photos to your Bookmarks
2. Open the list of Bookmarks
3. Tap and hold the Bookmark with the photos
4. Select “Add to Home Screen”