

If the reports are somewhat technical (written with Latex for example), check out sioyek: https://sioyek.info/. It’s a PDF reader mainly for academic use.
Sioyek has made reading and reviewing papers SO much easier and it’s really, really convenient… once you get the hang of it. It takes a bit of time to get used to all the things, but it’s worth it. I also review students’ theses with it. Highlighting colors and adding comments is super easy (select text, h+g (green highlight), type comment).
If you have want to export your notes and comments, you will need this script though: https://github.com/ahrm/sioyek/blob/main/scripts/embedded_annotations.py



There’s a pretty cool video about it here:
https://www.theguardian.com/environment/2022/aug/04/magnificent-jellyfish-found-off-coast-of-papua-new-guinea-sparks-interest-among-researchers (YouTube link: https://www.youtube.com/watch?v=tpaGYqE7dPA)
AFAICT, it’s the second sighting of this jellyfish.
The original video (without edits) is on Facebook 🤮: https://www.facebook.com/watch/?v=253522076865770