Not very impressive at the painfully low resolution you download the images at. You can zoom in for a larger view, but the website does all it can to prevent users from actually downloading the high resolution image.
Pathetic for a museum.
Pathetic for a museum.
One of the benefits of this is that you can get access to a metadata file that lets you know technical information about the image: It's at https://iiif.micr.io/TZCqF/info.json.
https://www.nga.gov/collection/art-object-page.163184.html
Downloadable JPEG in 4096 × 2441 pixels. Public domain licence.
Another example of the Rijksmuseum neighbouring the Van Gogh Museum:
https://www.rijksmuseum.nl/nl/rijksstudio/kunstenaars/johann...
Downloadable JPEG in 4226 × 4762 pixels. Public domain licence. Only downside is a required account there, but while it asks for an e-mail address, it doesn't bother to check it. (So why ask? Sounds like a GDPR violation.)
I consider these a baseline for important historical works unencumbered by copyright. There is no reason the Van Gogh Museum should hoard digital assets. That is not their mission.
Then it will complain that 3570x4700 is too large because "the maximum is 4000x4000px" which is weird because 3569x4699 is already bigger than 4000x4000 in both linear and areal dimension.
But what they really mean is 16Mi pixels - 16770731 (3569x4699) < 16777216 (2*24, 4096x4096) < 16779000 (3570x4700).