adding keywords to pdf files

[Nichtraucher]

Hello,I'm new here :-)


I'm trying hard to easily add keywords to pdf files in batches and somehow stumbled across exiftool.

I used this sample command that I found on a Ubuntu support site:

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exiftool -mwg:keywords+="keyword" *.pdf

This returned:

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4 image files updated

The added keyword doesn't show up when I open it in the viewer.

Did I miss anything?

cheers

[StarGeek]

mwg:keywords updates IPTC:keywords and XMP:subject.  A quick look at various pdfs I had on hand seems to indicate you might want to try PFD:Keywords or XMP-pdf:keywords.

[Nichtraucher]

Many thanks for your help!

Ok, I tried

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exiftool -PFD:keywords+="keyword" *.pdf
and got in return:

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Warning: Tag 'PFD:Keywords' does not exist
Nothing to do.

and

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exiftool -XMP-pdf:keywords+="Keyword" *.pdf

led to:

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Warning: Can't add XMP-pdf:Keywords (not a List type)
Nothing to do.

:-/

[Phil Harvey]

"PFD:Keywords" was a typo.  Try "PDF:Keywords".

- Phil

[Nichtraucher]

That did it, thanks a lot! :-D