I have 10+ messages on Discord

I either want an extension to save discord messages as pdf or one single screenshot.

OR

I want to know if there is a way to export certain messages on discord into pdf or jpg images.

Usecase: I ask doubts on Math discord servers, sometimes it can be concluded in one page (and I can screenshot it) and save it along with the question so I can have a look at it before exams. But some questions take longer discussions. Discord is chaotic and shi**y according to me. I want to have images or pdf locally. So, how would you go by doing this?

https://addons.mozilla.org/en-US/firefox/addon/discord-notebook/ This is a nice add-on which is available for Chrome too. But, it's a pain in the jazz and it really isn't better than a screenshot. I added it here coz I thought some of you might find this helpful.

I could have easily have done a long screenshot with Firefox's screenshot application (in the browser), but discord website won't let me scroll. If you guys can help me with the scroll thing then the problem is solved.