SnapShot - where does the captured file get saved?

I'd like to use the snapshot behavior to capture what is on the current page but the User Guide doesn't have documentation on where the captured file gets stored on the user's device, I see the captured file gets saved into my Documents folder on my laptop. I'd like to tell user where they can find their captured screenshot on their iPad. It might be nice to allow the user to name their captured file before it is saved so they can easily find it.

Thanks for your help.