@sinbad if I'm understanding correctly, you just want to download web pages to refer to later, even if they drop offline?
wget -pk https://something.com
👍
-p downloads the resources as well as the raw page, so that it renders fully. -k rewrites the page to link to the downloaded assets instead of the originals.
Full man page here: https://www.man7.org/linux/man-pages/man1/wget.1.html
(works on Windows too, just needs installing first)