There has been an issue with the image intensity of PDF being too high
for thumbnail generation which I believe that some have solved by
resampling at a lower rate. There was some discussion in English WS's
Scriptorium within the past half year where people were asking for
fixes, if you want the full detail.
-- billinghurst
------ Original Message ------
From: "Lars Aronsson" <l...@aronsson.se>
To: "Wikimedia developers" <wikitec...@lists.wikimedia.org>;
"Wikisource" <wikisource-l@lists.wikimedia.org>
Sent: 26/09/2019 6:56:51 PM
Subject: [Wikisource-l] PDF preview missing (429 Error generating
thumbnail)
On September 16, ten days ago, I got a relapse and started to
contribute to Wikisource again. I found some nice PDF files
and uploaded them to Commons, a total of 81 issues of the
official gazette of Finland from the winter 1878. I have
since then been proofreading several pages from the first
week of March (when the peace at San Stefano was signed), e.g.
https://sv.wikisource.org/wiki/Finlands_Allmänna_Tidning_1878-03-05
But previews (thumbnails) have been generated for none of these
81 PDF files. I am able to proofread the text (embedded in the PDF)
only because I keep local copies of the PDFs that I can view.
https://commons.wikimedia.org/wiki/Category:Finlands_Allmänna_Tidning_1878
On September 17, I asked about this problem on the Help desk,
https://commons.wikimedia.org/wiki/Commons:Help_desk#PDF_previews_missing
and a kind person registered the problem in Phabricator,
https://phabricator.wikimedia.org/T151202
but then nothing has happened in more than a week.
So there is not only a problem in generating thumbnails, but
also in responding to a reported problem.
I don't even know if there is a technical problem with the
PDF files I uploaded or if this is a temporary technical
problem on Commons. (But since I can view the local files,
I assume the files are okay.)
-- Lars Aronsson (l...@aronsson.se)
Linköping, Sweden
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