Comment by nicoburns

I am building such a lightweight browser engine: https://github.com/dioxuslabs/blitz. It targets most of HTML/CSS, but leaves out (or makes optinal) a lot of the extra stuff that browsers pull in). It also has the option to use Rust instead of JavaScript for the scripting layer.

Though 8 MB RAM is a non-starter when a single RGBA texture @4k is ~30Mb and modern system often require 2 or 3 for buffering. Somewhere around the 60MB to 100MB mark seems to be the base for modern setups, at least on macOS.