First, Status Machine needs to know which pages are going to be captured with the snapshots. So we crawl your website to create that collection of page links.
After your crawl is finished, you can capture Snapshots of your website. A Snapshot is a collection of screenshot images for every page that was found on your site.
When you have more than one Snapshot for your website, you can compare them, to create a visual difference of between those two website states, captured by your Snapshots.