Will I be struck down or downvoted into oblivion if I mention man2html? Definitely not light weight since it also installs Apache, but I do like to view man pages in the browser. I think 'python3 -m http.server' could be substituted for the server and perform well enough for a single user system.

It's unfortunate that Markdown isn't better standardized so it could be extended to better meet the needs for man pages. (Do we need a new standard to rule them all? Yes, I'm thinking of the XKCD comic.)