This one is unfortunately not listed in the appendix. I want the trimbox of the original PDF that is input, not the processed one.
(The trimbox of a Business Card, not the imposition)
Understood. We update those as the job moves through the workflow and currently do not have the original dimensions for those variables.
I would enable this in the following manner:
Add an Optimize node at the start of the workflow. Have this optimize store the trimbox width and height in two of the PDF metadata fields (e.g. Author and Title).
Use the PDF metadata fields to add watermark with the original trimbox width and height.
THat should do the trick (I just tried it).