cannot retrieve pdf metadata

After right-click on a PDF file, in stand-alone zotero's middle pane,
there is no menu option on the right-click menu,
to "retrieve pdf metadata".

There is no other way to get the metadata from a PDF file in Zotero.

There seems to be no discussion or awareness of this in the support pages or forums.

This is on Windows-10 systems (I've tried on three of them, all up-to-date with version 1809).
  • That's definitely still possible (that's why there's no discussion).

    Easiest for diagnosing what's wrong in your case would be for you to take a screenshot of the right-click menu (use the Windows "Snipping tool" with a delay to capture that), post it to a free image hosting site (imgur.com, dropbox.com, etc.) and link to it here.
  • OK, thanks. That was a good tip and easy to do -- have taken a screenshot of the menu now and this is the dropbox link to it :-

    https://www.dropbox.com/s/79t0ewg6l7a237v/zotero-rightclick-menu-pdf-missing-retrieve-metadata.PNG?dl=0

    The option "create bibliography" fails, saying "contains no references"
    To "generate report" does make an empty report.
    To "rename file from parent metadata" does change the pdf name, but only to parent name of course; no metadata retrieved.
    To "reindex item" seems to work internally, whatever it's for, but does nothing visible.

    In past versions maybe this worked in zotero on these windows systems, but didn't notice as wasn't using it much on windows. So not sure when (if) this stopped working, or disappeared from the menu.

    HTH.

  • Have just tried another windows-10 system, which hasn't yet updated to version 1803 for x64 systems.
    There, this works in zotero (version 4.0.29.10)!

    After upgrading to windows-10 release 1803, then the "retrieve metadata" entry disappeared from the right-click menu.

    Looks like the windows update breaks something, in zotero versions 4 and 5.
    I've no idea what, but it's something the zotero development team may want to look out for, assuming Microsoft don't fix the issue in a future update...
  • No, there's really no regression. You can only (and have only ever been able to) retrieve metadata for PDF items at the top level, i.e. not attached to another item. For the option to appear in the item in question, you'd have to drag it up and place it between items so it is no longer an attachment.

    I'm a bit surprised how you got the PDF into Zotero in this form though -- that should not appear commonly.
  • OK, then dragging the pdf to top level first, and then retrieving it's metadata, does work. The previous incomplete entry can then be sent to trash. Thanks, will just remember to repair things that way from now on.

    Nor sure either how it happened. Just captured some papers today from Google scholar, and from research gate like this one, and seems that an automatic retrieval step was missed. Perhaps a server was unavailable momentarily. Anyway this is the source:

    https://www.researchgate.net/publication/323502497_Science_of_science
  • When you are logged into ResearchGate, the site provides terrible metadata, which imports like you see here. Either go to the journal webpage and import, use the DOI with the magic wand tool, or view the PDF in your browser first, then import from there.
  • Good tip, thanks. Researchgate seems to have changed things so you can't view pdf in browser directly, but you get a way to view it their way in a sub-window (pane). Perhaps trying to control their users.

    But the other ways you suggest are effective.
    For anyone following this, the doi using the magic wand icon in the zotero middle pane -- that works a treat.
  • If you do end up at the ReaearchGate PDF page, right click on the pdf pane and choose This Frame -> Show Only this Frame. Then import using the Zotero button at the now PDF-only page.
  • Thanks, have just tried that.
    Not quite working FYI, probably due to browser compatibilities.
    But nearly...

    So what works (in chrome on windows-10, at researchgate), is to right-click on Download blue button, and open in other tab. that prompts to download the PDF.
    Canceling that leaves the new tab open with the url in the top.
    Clicking on that and hitting "return" to revisit that url now loads the PDF as a page.
    Then can go to zotero using the extension button as you say.

    A bit roundabout, but ok. Probably some broswer settings may be involved.

    Other way to do this is to right-click on the page, and in zotero sub-menu, select the DOI option. That works pretty well.

    In both cases however (and this probably only me) the PDF is downloaded as new top-level item into Zotero stand-alone app.
    But then getting it to retrieve metadata fixes it properly.

    Why is that last step needed for me? As to an earlier question, this is probably connected with the recent windows upgrade (to 1803).
    This is probably too vague to help developers, but it's a clue.
  • Which Zotero version are you on exactly?
  • zotero version 5.0.60 on windows-10, with latest update to 1803.
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