glow.nvim VS nabla.nvim

Try this plugin called glow

Perhaps take a look at Glow.nvim?

Something like this might be interesting: But I guess you might be looking for something more integrated. https://github.com/ellisonleao/glow.nvim

https://github.com/ellisonleao/glow.nvim - A must for getting live in buffer previews

You want the preview in neovim itself and not in an external application? What kind of preview did you have in mind? Neovim typically runs in a terminal, and in the terminal, you typically can't have graphics or multiple fonts or other things advanced markdown would support. There are plugins that would preview with something like glow—see here. Not sure if that would met your needs.

i usually use https://github.com/ellisonleao/glow.nvim for quick in-terminal peeks, and https://github.com/iamcco/markdown-preview.nvim (browser and terminal side-by-side) if I need to refer while editing.

I don't know about brow.sh but you can do it with glow.nvim, which uses Glow

I've been thinking of setting up a note taking enviroment in neovim. I've been searching around, and plugins as vimwiki, and nabla.nvim are great choices for me. I'm using Notion right now because of the great commands that brings that make the note taking pretty enjoyable. But the dividers, or putting background to text are features that I don't wanna lose, if possible.

So, to answer your question - image rendering while possible theoretically, practically is very hard to achieve. This also goes for math (unless you render math with ascii symbols).

Closest is projects that convert it to ASCII/unicode like nabla.nvim

nabla.nvim

for latex visualization there is: https://github.com/jbyuki/nabla.nvim