An example of using HostIIIF
https://gjhltn.github.io/HostIIIF-demo/
The demonstration image, Rogier van der Weyden's Portrait of a Woman with a Winged Bonnet is believed to be in the public domain, according to https://en.wikipedia.org/wiki/Rogier_van_der_Weyden#/media/File:Rogier_van_der_Weyden_-Portrait_of_a_Woman_with_a_Winged_Bonnet-_Google_Art_Project.jpg
