Add and modify the XMP data in Acrobat DC using javascript

[Rocky@]

Hi All,

Is it possible to modify the meta data in the PDF file acrobat DC using Javascript?

Thanks

 

[try67]

Yes. The metadata property of the Document object gives you direct r/w access to the raw XMP data, as a string.

[Rocky@]

Is it possible to add/modify via Javascript/Applescript?

[try67]

Yes, as I wrote.

[Rocky@]

Could you please share some samples how to modify the XMP data. Im new to this which is really helpful

[Rocky@]

Im trying with below shell script it doesn't change the XMP data

do shell script exiftoolPath & " -Keywords=" & quoted form of newMetadataValue & space & imagePath

[try67]

To do that you can use the info property, like this:

this.info.Keywords = "Text";

[try67]

It's just a string. You can modify it using the various methods available in JS for text manipulation.

[Rocky@]

Im trying to change year 2021 to 2022 but it not works...

this.info.Year = "2022"

 

 

[Test Screen Name]

Only a few elements are available via Info, these are the PDF metadata which existed before XMP. Author, Keywords, Subject, Title. Changing these fields also automatically updates the XMP. In other cases you have to edit the XML - this is not a simple task.  

But the one example you are using is not JavaScript, it is shell script, and is not using Acrobat at all, but an EXIF tool. The JavaScript we are talking about is the internal Acrobat JavaScript, which you cannot run from the command line. Run it from the Acrobat JavaScript console.

[Rocky@]

Thank for the info!

Im tried with the below shell script but it changes the value for CreateDate, CreatorTool and it doesn't the value for year

property exiftoolPath : "/usr/local/bin/exiftool"

set newMetadataValue to "2022"
set imagePath to quoted form of (POSIX path of (choose file of type "pdf"))

-- Add new metadata "Keywords"
do shell script exiftoolPath & " -Year=" & quoted form of newMetadataValue & space & imagePath

 

[Test Screen Name]

The subject you posted was "Add and modify the XMP data in Acrobat DC using javascript" but this isn't JavaScript and isn't Acrobat DC.

[Rocky@]

FYI I have tried in different soruces also for that only I have shared the shell script here.