I made use of something a couple of several weeks ago that scanned a particular website and produced a visible hierarchy from the website's page links. Additionally, it symbolized each page using its appropriate screenshot.

Does anybody understand what tool this really is? Or possibly something which works exactly the same fundamental features?

Scratch that, I discovered it! InfoRapid's Understanding It creates visual sitemaps like that one of Google:

You should use :

  • Visio
  • Top of the page

there's additionally a similar question here