Dear Jason,

I only have experience with creating PDFs using Apache FOP, but you can embed 
metadata in a PDF file.  One approach is to use Adobe's XMP 
(https://www.adobe.com/products/xmp.html) standard, which is also an ISO 
standard.  

Have you tried adding XMP to your PDFs to see what sort of support is available 
from Zotero, Mendeley, etc?  I looked at one example PDF from brit.org but it 
doesn't look to include any embedded metadata, so that might be a good place to 
start.  Also, another great thing about a tool like Apache FOP is that you can 
utilize it to help ensure that the resulting PDF meets accessibility standards 
and/or guidelines (https://xmlgraphics.apache.org/fop/2.3/accessibility.html), 
such as PDF/UA.  

In any event, I'd love to hear more about what approach you take once you find 
out what works best.

All my best,

Mark



-----Original Message-----
From: Code for Libraries [mailto:[email protected]] On Behalf Of Jason 
Best
Sent: Tuesday, 26 March, 2019 12:54 PM
To: [email protected]
Subject: [CODE4LIB] Best practices for improving metadata extractability from 
journal articles?

Hello,
I’m working with our journal to improve the quality of the metadata that can be 
extracted from PDFs of individual journal articles by reference management 
software like Zotero, Mendeley, EndNote, etc. The only description I’ve found 
of the metadata extraction process is from Zotero 
(https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.zotero.org%2Fsupport%2Fretrieve_pdf_metadata&data=02%7C01%7Cmark.custer%40yale.edu%7C51a1d79cc33148bdc9c708d6b20b9873%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C1%7C636892160236074799&sdata=VtqHt3em5sX1KN8jBJUQhRHDR3Ji1F5OpBXYjKSjL4I%3D&reserved=0)
 which "sends the first few pages of a PDF to the web service, which uses a 
variety of extraction algorithms and known metadata from CrossRef, paired with 
DOI and ISBN lookups, to build a parent item for the PDF”. What I haven’t found 
yet is a description of how to format the text of a PDF to ensure that the 
article metadata can be reliably extracted by reference managers. Most of these 
journal articles were published before we were issuing DOIs (or even before 
DOIs existed) so I’ll be adding a cover page to all the PDFs with title, 
authors, issue, pages, doi (issued retroactively), issn, etc. I’d like to 
format these pages in a way that ensures optimal extraction of metadata 
emphasizing of course the DOI and ISSN. In my experience, Mendeley can 
sometimes extract the article metadata fairly well even without a DOI lookup so 
I’d to aim for a format that is easily parsable in this way and not 100% 
relying on a DOI lookup. Does anyone have any experience or suggestions on how 
to craft such a page to work well across different reference managers?

Regards,
Jason

Jason Best
Director of Biodiversity Informatics
Botanical Research Institute of Texas
1700 University Drive
Fort Worth, Texas 76107

817-332-4441 ext. 230
https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.brit.org&data=02%7C01%7Cmark.custer%40yale.edu%7C51a1d79cc33148bdc9c708d6b20b9873%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C1%7C636892160236074799&sdata=DDiKuGobStcjKVDB7MaFlzBBsuVQxwwpbYf%2FlpkZqDI%3D&reserved=0

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