Saving to disk doesn't write all the metadata into the PDF

[1gnition]

Hello,

I have built my library with full metadata for every ebook, that is, all the fields are filled (ISBN, publisher, publish date, etc.).

I wish to embed the metadata into the PDF files, so I used 'save to disk' and looked up the metadata of the saved PDF. Unfortunately, some of the fields were missing: ISBN, publisher, and publish date.

I searched the preferences for an option to add those fields to saved files, but haven't found any.

Any idea how to fix this?

Thanks.

[kovidgoyal]

PDF has no support for most metadata.

[1gnition]

Okay, didn't know that.

But if I wish to just add these data as info fields? Here is a dump taken using pdftk dump_data:

InfoBegin
InfoKey: Creator
InfoValue: calibre (0.9.43) [http://calibre-ebook.com]
InfoBegin
InfoKey: Producer
InfoValue: Adobe PDF Library 9.0; modified using iText 5.0.3_SNAPSHOT (c) 1T3XT BVBA
InfoBegin
InfoKey: Keywords
InfoValue: Programming, Computers, Apress, Mobile Devices, Hardware, Games
InfoBegin
InfoKey: ModDate
InfoValue: D:20130815103715+02'00'
InfoBegin
InfoKey: CreationDate
InfoValue: D:20121105151749+05'30'
PdfID0: eeabd31eaf3c3095d7556aa2531f642b
PdfID1: eeabd31eaf3c3095d7556aa2531f642b

I know that it's possible to add info fields using pdftk update_info. Maybe they won't be supported, but at least I'll know that the additional metadata is built into the file.

Is there a way to automatically extract the XML from the OPF file and add it to the PDF using pdftk update_info?

BTW, this is an awesome app!

[kovidgoyal]

title keywords and author are all updated by calibre in PDF files. Those are all that are supported