A Snapshot represents a series of tests run at a point in time for the pages and Test Profiles of your Site.
Calibre will automatically create Snapshots (a series of tests) at selected intervals. When you create a new Site, it will default to being tested every 6 hours.
You can change the scheduler to your needs when adding a new Site or later on the Site → Settings → Agent Settings page.
The options are:
There might be times when you want to create a Snapshot manually or automatically as part of your continuous integration system.
To manually create a Snapshot for your Site, visit the Snapshots page, then press the Take a Snapshot button.