how to remove XMP Media Management from .pdf file? Is it possible?

[Toastie]

Hi -

I have Adobe Acrobat Pro 7 and I am trying with no luck to remove some meta info from a pre-existing .pdf file.

If you click on File, Document Properties, and then the Description tab you get a bunch of meta fields that can be edited. Along the right hand side there is a button labeled "Additional Metadata" - click on that and you get more metadata fields. Now along the left side there are several options - click on the one which says "Advanced". Now you see even more meta info displayed in a directory type structure.

The meta info I am trying to delete is under "XMP Media Management Properties". The two things are "DocmentID" and "InstanceID" which are some sort of identifier for that particular file - perhaps a unique identifier. If you highlight them and hit the "Delete" button they go away. Do a file save and you would think you have now saved the file with that info stripped out. However the problem is that when you reopen the file that pesky unique info is back again just as it was before. Its as though it is really permanently embedded into the file somehow.

How the heck can you edit or just completely remove the XMP Media Management Properties info?? The file does NOT have any password protection on it.

What is going on here? Any help would be appreciated.

Thanks!

[Midzuki]

Give a try to "BeCyPDFMetaEdit" @ googleDOTcom

1.3 Metadata (XMP)

Since PDF version 1.4, metadata can be stored in a new XML-based format named XMP ("Extensible Metadata Platform"). With regard to backward compatibility, newer PDF documents contain the metadata both in XMP and also in classical form. However, the application is currently not capable of processing metadata in XMP format. This can lead to the effect that a PDF viewer shows the original field values after the metadata has been edited. Even if the PDF viewer shows the new metadata, the XMP metadata still contains the original field values which could be extracted using a hex or text editor.

To address these problems, the application allows at least to remove the XMP metadata. The metadata will then only be stored in the classical format.

Attention: XMP-based metadata cannot only be specified for the entire PDF document but also for parts of it. The application only deletes the document-specific metadata, metadata attached to other document content stays as is. Therefore, additional tools like a hex editor are required if all XMP metadata shall be removed.

Hope this helps.

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P.S.: Drop Acrobat 7. Find and buy Acrobat 4 or 5, or choose GhostScript (freeware),
or simply "move house" to Nitro PDF.

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