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An overview of all the technical metadata facets in Europeana Collections can be found at Documentation on the Europeana Search APIAPI. The content tiers, i.e. the quality of a media resource as specified in the Europeana Publishing Framework, are calculated on the basis of the technical metadata.

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Display of Media Resources

CORS

In order for the Europeana Collections portal to access and display media resources coming from providers’ servers, the latter must support Cross-Origin Resource Sharing (CORS). This is because web browsers restrict resources on a web page to be requested from another domain outside the domain it was served (Collections in this case). The CORS standard is needed because it allows servers to specify not only who can access its resources but also how these resources can be accessed.

Note

This is especially important for providers who share resources via IIIF as CORS is essential for our IIIF viewer to perform the image information requests and to obtain the presentation manifests. Without CORS, although the IIIF resources will be displayed in the provider’s website, it won’t be possible to be viewed in the Europeana Collections portal. For more information about CORS.

HTTPS

Providers of IIIF resources are encouraged to deliver their resources over HTTPS so that they can be included in our web page without issue.

Embedding of media resources

In order for an item to be embedded in the Europeana Collections portal, there must be a valid oEmbed endpoint (see example from SketchFab) available where the media referred to in the item is displayed using a third party viewer or player. An exception is made for some data partners that do not support oEmbed.

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