Archive Everything

With extra trackers a website can block access to archive or bots.
If you need to archive it anyway, offline, there’s SingleFile.
Chrome Web Store (the one with >815 ratings)
SingleFile – Get this Extension for 🦊 Firefox (en-US)

Some browser add-ons affect the resulting file.html, the results may be used to correlate multiple such files if you post them; against that, use a browser with no add-ons but SingleFile.

Means to archive everything (not exhaustive):