Thanks Paul. Suggestions/tweaks all appreciated.
As for the hotkeys, yes - I rely a good bit on macro keys on my keyboard, mouse, and Elgato Streamdeck, so some customization may be needed depending on your setup. If you do this sort of document review regularly, the workflow is particularly efficient if you program the forward/backward buttons on the Logitech MX 3 mouse instead to activate the PDF Copy / PDF Paste macros. Plus it works very well if you have multiple monitors or a large screen and thus can open PDFpenPro and TInderbox simultaneously.
As for the size of the file, the macro as written reduces the original height/width of the image to 40% of the original size; that of course can be adjusted to your preference. Perhaps more important, before running the macro each day you can use the Mac command Shift-Command-5 to bring up the macOS config settings for screen capture; if you adjust it to capture only a portion of the screen rather than the entire screen then of course the storage space used will change dramatically.
The point about non-support of pasted image export is noted; my plan is to create a Hook link to the Tinderbox file in my Devonthink project and thus load the completed notes from there when I plan to refer to them.
As for setting PDFpenPro to "“Always Open With” - my understanding is that this is a requirement any time you want to use the Hook/PDFpenPro integration; is there some way to get around that requirement?
Another interesting question - When you do a Copy/Paste without the macro, Hook resolves the link to display the name of the source file. But when I use the macro, the full hyperlink address is shown instead - any idea why?
Finally - there seems to be some bug I have not figured out where the first screen paste in any give session sometimes is blank. If someone identifies why that may be I would be interested in the fix.