in reply to [OT:] Properties of images in pdf

As a pragmatic approach:

I seem to remember that Image::Magick was capable of extracting image files from pdf.

Once extracted maybe try to use the usual means to get the metadata you need?

HTH! :)

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

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Re^2: [OT:] Properties of images in pdf
by marto (Cardinal) on Dec 02, 2018 at 21:07 UTC

    CAM::PDF (and likely others) can extract images, which doesn't mean that that they necessarily have the desired metadata embedded in them, that depends on the tools used to create the jpg and the PDF, and the options selected.