Can I define new attributes in XMP for PDF?

StackOverflow https://stackoverflow.com/questions/11297389

  •  18-06-2021
  •  | 
  •  

Question

I know there are some attributes in XMP for PDF files such as:

     <xap:ModifyDate>2009-12-10T09:54:47-05:00</xap:ModifyDate>
     <xap:CreateDate>2009-12-10T09:42:54-05:00</xap:CreateDate>
     <xap:MetadataDate>2009-12-10T09:54:47-05:00</xap:MetadataDate>
     <xap:CreatorTool>Adobe InDesign CS4 (6.0.4)</xap:CreatorTool>

But I want to define custom attributes for example:

     <xap:ViewTitle>2009-12-10T09:54:47-05:00</xap:ViewTitle>
     <xap:GUID>2009-12-10T09:42:54-05:00</xap:GUID>

Can I do it?

Was it helpful?

Solution

Yes, you can.

According to XMP Specification

New properties may be added to existing namespaces without “breaking” applications.

The definitions of properties in existing namespaces should always remain the same; otherwise, applications may produce incorrect behavior. If it is necessary to change the meaning of a property, a new property should be created (and the old one declared as deprecated).

And you can create new custom schemas. Probably it's a better approach than extending existing schema.

More information can be found in Extensibility of Schemas in XMP Specification.

OTHER TIPS

You can use the XMP bridge libraryto edit XMP. Marijan Tompa gave great insights on its blog : http://indisnip.wordpress.com/2010/09/07/storing-custom-data-into-indesign-file-xmp/

Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow
scroll top