Dominik Schmidt created TIKA-4852:
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Summary: EpubParser: mark the cover image as a THUMBNAIL embedded
resource
Key: TIKA-4852
URL: https://issues.apache.org/jira/browse/TIKA-4852
Project: Tika
Issue Type: New Feature
Reporter: Dominik Schmidt
EpubParser emits every image of the package as an untyped embedded document, in
manifest order. The OPF names the cover, though: EPUB 3 via
properties="cover-image" on the manifest item, EPUB 2 via <meta name="cover"
content="<item id>"/>. Neither is read (OPFParser has no notion of a cover), so
a client that wants the representative image of an EPUB has to guess.
Proposal: resolve the cover item from the OPF (properties first, then the meta
fallback) and emit it with tk:embedded-resource-type=THUMBNAIL, like the
preview image of the other container formats (ODF, OOXML, iWork, GeoGebra,
audio cover art as of TIKA-4850). Other images keep their current handling.
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