Harvest thumbnails using IIIF Manifest APIs

[karenmajewicz]

Our current thumbnail harvesting code will harvest from IIIF Image APIs. It would be nice to enhance this to also harvest from IIIF Presentation (Manifest) APIs. Since Manifests are often multipart, we should just harvest the first image listed.

[ewlarson]

Indiana - No IIIF Manifests (that I know of)

Illinois - IIIF Manifests have thumbnail entries ex. https://digital.library.illinois.edu/items/a07f9c70-994e-0134-2096-0050569601ca-8/manifest

Iowa - No IIIF Manifests (that I know of)

Maryland - No IIIF Manifests (that I know of)

Michigan - IIIF Manifests have thumbnail entries ex. https://quod.lib.umich.edu/cgi/i/image/api/search/clark1ic:003287878

Michigan State - ex. https://d.lib.msu.edu/maps/1084/manifest

Minnesota ex. https://cdm16022.contentdm.oclc.org/iiif/info/p16022coll205/265/manifest.json

Nebraska - ex. https://mediacommons.unl.edu/luna/servlet/iiif/m/RUMSEY~8~1~317895~90086920/manifest

Northwestern - ex. https://api.dc.library.northwestern.edu/api/v2/works/183249d3-aff6-40d5-b445-8f70addedcc3?as=iiif

Ohio State - IIIF Manifests do not have thumbnail entries ex. https://library.osu.edu/dc/concern/generic_works/9k41zr126/manifest

Penn State - ex. https://digital.libraries.psu.edu/iiif/2/maps1:30183/manifest.json

Rutgers - No IIIF Manifests (that I know of)

[karenmajewicz]

It looks like Maryland might have manifests. Inspecting the page for this record, I found:

Image: https://iiif.lib.umd.edu/images/fedora2:umd:82080/info.json Presentation: https://iiif.lib.umd.edu/manifests/fedora2:umd:82079/manifest

It's a small collection, so I will update the records to include the manifest. Should I leave the Image API in the record as well?

[ewlarson]

Nice find! You can leave the Image API values in there. IIIF Manifests are prioritized over IIIF API.

[ewlarson]

Initial iiif_manifest viewer and images service thumbnail code is running on GeoProd now.