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https://issues.apache.org/jira/browse/TIKA-4442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17986022#comment-17986022
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Peter Hoogendijk commented on TIKA-4442:
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For the 6 tags that were missing, it is what I expected, but now I noticed that
the "dc:subject" tag contains the wrong data: it shows a list with the data
from the following tags:
* pdf:docinfo:subject (from the pdf metadata)
* pdf:docinfo:keywords (from the pdf metadata)
* pdf:keywords (from the xmp metadata)
And it is missing the data from the following tags:
* dc:subject (from the xmp metadata)
When looking at the XML for my testfile (see attachment) the xmp metadata
contains the correct "dc:subject" and "pdf:keywords" but:
* Tika shows the wrong data in "dc:subject" (from the xmp metadata)
* Tika does not show "pdf:keywords" (from the xmp metadata)
* Tika does not show the actual "dc:subject" (from the xmp metadata)
But going back to Tika 3.2.0 this also happens, so it is not related to this
TIKA-4442 issue. Do you want me to file a separate issue?
> PDFParser does not list all metadata extracted by PDFBox
> --------------------------------------------------------
>
> Key: TIKA-4442
> URL: https://issues.apache.org/jira/browse/TIKA-4442
> Project: Tika
> Issue Type: Improvement
> Components: parser
> Affects Versions: 3.2.0
> Environment: * Docker container based on python:3-slim
> * Debian 12.11
> * Python 3.13.5
> * openjdk 17.0.15 2025-04-15
> * tika-server-standard-3.2.0.jar
> * pdfbox-app-3.0.5.jar
> * PyPDF 5.6.1
> Reporter: Peter Hoogendijk
> Priority: Major
> Attachments: lorem-ipsum.pdf, lorem-ipsum.xml
>
>
> While using Apache Tika to extract metadata from PDF files, I found the
> following XMP metadata entries to be missing:
> * dc:identifier
> * dc:language
> * dc:publisher
> * dc:relation
> * dc:source
> * dc:type
> Python (PyPDF2) and PDFBox (as used by Tika's PDFParser) do show these XMP
> metadata entries, so I expected Apache Tika to also extract these entries.
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