Google analytics tracking code insert in pdf file

Is it possible that I can insert a tracking code of Google analytics in PDF file? I want to know where are users coming from and how users behave in my PDF file.

Please do guide me if you know some process or approach...

I know that PDF accepts some javascript, but I don't know if its capa开发者_运维技巧ble of google analytics.

Thanks!

You can't, to my knowledge, insert the actual Google Analytics JavaScript snippet into a PDF.

EDIT: My previous answer was incorrect; I said you could embed the __utm.gif that GA fires in the PDF, but @Mark is correct in saying this is not possible.

The correct answer is: It's not possible to embed an external resource in a PDF, at least not with modern PDF readers with basic security settings.

That simply isn't going to work. PDF's object model is completely different from HTML's DOM. Scripts in one won't work in the other, failing with various null references:

var foo = document.getElementByID("someID");

"Boom: document is undefined", as is "window" and all the other global objects web pages depend on.

Personally I place the PDF inside an iframe and then I place my GA and Piwik in the header of the html page that contains the iframe. A bit crooked, but does the job.