if I hate publishing as pdf, what is my best alternative?

The only problem is externality pricing.

Building https://negationgame.com

What is your end goal or purpose? I might have a few ideas!

Helping writers publish where tradition meets digital. #The7LoveStories Author. CEO of Whitney Morgan Media. PageDAO. Vagobond Magazine.

I'm writing essentially a whitepaper

I want something that is beautiful to read online both mobile and desktop, can be nicely formatted including adding images and graphics, doesn't have page breaks, can be downloaded and shared

Essentially I want responsive pdf without page breaks

notion is worlds worse. Have you ever tried copying something from notion?

Too many requirements then, I even found a html template that you can use for one page documentation with  menu section but I guess it does not meet your requirements