Needs to do a bit more. It choked on a 400 page doc site I tried (at least with the free tier I have access too).
I would really like to see it in action on a docbase I'm familiar with, though.
Edit: Just tried again, and it hangs on doc 55 out of 421.
Here's the site if anyone else wants to give it a go: https://github.com/fusionauth/fusionauth-site/