One brilliant use for this tool is demonstrated by Zimit, which enables you to nominate a website, crawl it and then archive its webpages into .zim file which is readable offline in Kiwix.

https://github.com/webrecorder/browsertrix-crawler
GPL v3
Docker Image is available

https://webrecorder.net/tools#browsertrix

Zimit:
https://youzim.it
Kiwix:
https://kiwix.org
.zim
https://www.openzim.org/wiki/ZIM_file_format

This is a complex piece of software and the busy maintainer would like to help make it easier to use. It might be possible for open instances of Browsertix-Crawler to help scale-up the power of a crawl on larger websites. I suppose it might be possible to share results of crawls between co-operating instances too, at some stage.

For example, you can create a dump of all of Wikipedia, about 60GB, compressed into a .zim, and then browse it offline.