Images are required in OPDS publications as per the OPDS 2 spec. More, the collection must contain at least one item as per the JSON schema (which is not an explicit requirement in the spec).
But we have a use case where OPDS publications are generated from DAISY publication, which have no cover image. They are consumed from a smart speaker client which has no screen. Adding a dumb image is not good practice.
Images are required in OPDS publications as per the OPDS 2 spec. More, the collection must contain at least one item as per the JSON schema (which is not an explicit requirement in the spec).
But we have a use case where OPDS publications are generated from DAISY publication, which have no cover image. They are consumed from a smart speaker client which has no screen. Adding a dumb image is not good practice.