I am going to show you how to save a snapshot you took for your game.
Try this link for an example. http://www.scirra.com/arcade/addicting-example-games/6269/birdatar
1.Ok, lets open the game you want to add this to.
2.Add objects
-Browser
3.Add the code
On the command you want add canvas snap shot.
Below add on canvas snapshot browser invoke download canvas snapshot
Ok, thats it try run to test and integrate it to your games thanks for reading.