Suppose one had downloaded a copy of Wikipedia (ie, via Kiwix) but wanted to periodically compare changes vs the online version. I assume of course this is only practical on a page-by-page basis as diffing the entire site would take many hours and be an unreasonable load on their servers.

The challenge is, Kiwix stores the archive in a single file. Is there an established way to accomplish this, perhaps using a different downloaded format/viewing app?

And if not, would someone skilled at the craft consider making one?

I anticipate a takeover and massive scrubbing of Wikipedia in the next four years and would like to monitor the changes.