Undo or redo changes in Keynote on iPad
You can undo recent changes then redo them if you want them back.
Undo or redo actions
Do one of the following:
Undo the last action: Tap . Tap multiple times to undo all your recent actions. You can also use a three-finger swipe to the left to undo an action.
Redo the last action: Touch and hold , then tap Redo. Perform these steps multiple times to redo all your recent actions. You can also use a three-finger swipe to the right to redo an action.
If you want to delete all the changes you made since you opened a presentation, you can restore the presentation to its state when you opened it.