Pixii's page

Hello, I'm new to Pathfinder. (I found out about it like 2 years ago, but never played. And recently decided to try again)

I've seen a few database type websites that have all of the book's combined information, and I'm working on my own version. One that's more standard/updated for programming/designing in 2019. I don't know if these websites look like they fell straight out of 1995 because the creators are only web developers and not also programmers/designers (not judging) - or if it's because the Community Use Policy prevents them from creating amazing websites

So far, I'm only using images that I've found on Google for Pathfinder (excluding Pathfinder Kingmaker stuff, because I think that's their original artwork) and I'm using the Fan Site Kit art from THIS website

But there is some really great art in the book, and I don't know if I'm allowed to use that. For Example: on the Bestiary homepage, I'd love to just snap a photo from the book's I've purchased/images from the Free PDFs and use that as a header image for that page. Like "RAWRR I'm a monster and this is the Bestiary page!" Instead of just "text wall incoming, borrrinnggg"

NOTE: I do have the copyright notice at the footer of my website (The thing that says I'm not allowed to charge, and all artworks belong to Paizo/Pathfinder, etc). I made sure it was noticeable.
BUT - am I allowed to use Google Adsense on my website?

Hello! I am totally new to Pathfinder and I am already hooked!
(I also don't know where to put this thread, since I'm also new to this forum! Feel free to move it, if its in the wrong section)

I started making an offline website to help me GM my first game.
In the future, I would like to publish the website so that others can use it, but I was wondering if I'm even allowed to do that?

Would it violate some sort of copyright laws?

I noticed there is a program called Hero Lab that people can download for free, or pay ~$30 for a better version of the program. It's my understanding that this program has ALL of the information from the Paizo Pathfinder series (as well as some other games).

I have purchased the Core Rulebook and Rise of the Runelords before I found this website: http://paizo.com/pathfinderRPG/prd/
which has ALL of the information for free online. (Although, I'm one of those people that really just loves hardback books, so I didn't mind paying for it)

So my question is, am I allowed to use this information on my website, much like Hero Lab has done with their program? I tried to email Support, but I didn't receive a response.

Any help or advice would be appreciated!
- Pixii