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PDFlib - saving custom metadata with document page?

Is there any possibility of saving custom metadata with PDF pages using PDFlib API?

How can I save "A" is equal to 1 on page level and later retrieve it?

Solution

  • you might do this with XMP. From the PDFlib 9.2 Tutorial, chapter 11.1:

    XMP can be supplied for pages, fonts, ICC profiles, images, graphics, templates, and imported PDF pages. This can be achieved with the metadata option of various functions, for example: metadata={filename=info.xmp inputencoding=winansi}