You can list every man page installed on your system with man -k . , or just apropos .
But that’s a lot of random junk. If you only want “executable programs or shell commands”, only grab man pages in section 1 with a apropos -s 1 .

You can get the path of a man page by using whereis -m pwd (replace pwd with your page name.)

You can convert a man page to html with man2html (may require apt get man2html or whatever equivalent applies to your distro.)
That tool adds a couple of useless lines at the beginning of each file, so we’ll want to pipe its output into a | tail +3 to get rid of them.

Combine all of these together in a questionable incantation, and you might end up with something like this:

mkdir -p tmp ; cd tmp
apropos -s 1 . | cut -d' ' -f1 | while read page; do whereis -m "$page" ; done | while read id path rest; do man2html "$path" | tail +3 > "${id::-1}.html"; done

List every command in section 1, extract the id only. For each one, get a file path. For each id and file path (ignore the rest), convert to html and save it as a file named $id.html.

It might take a little while to run, but then you could run firefox . or whatever and browse the resulting mess.

Or keep tweaking all of this until it’s just right for you.

“I’m not X but <position statement that clearly requires them to be X” and “I don’t want to Y but <proceeds to do exactly Y>” are used by people that mistakenly believe a disclaimer provides instant absolution.

On the other hand, I’ve never had anybody threaten to yuck my yum in exactly those terms, and I’m slightly intrigued by the prospect.

Several times now, I’ve sent people I knew links to articles that looked perfectly fine to me, but turned out to be unusable ad-ridden garbage to them.

Since then, I try to remember to disable uBlock Origin to check what they’ll actually see before I share any links.