[lvh]

I've used org-noter to annotate PDFs in line, so I'd expect org-roam + links wouldn't hurt. Org will display images inline. I don't have a great answer for links into Excel. Do you need the data to "come back out", or just reference capability?

[dangirsh]

I can confirm org-roam links + org-noter works well for linking ideas between PDFs. I haven't found anything better, and regularly demo this to friends.

Related video demo: https://www.youtube.com/watch?v=Wy9WvF5gWYg

[vedtopkar]

This is very interesting, will check it out. I really just need a reference capability.

[pwillia7]

Org export to CSV/TSV