iCloud stores your presentations and keeps them up-to-date on your computers and iOS devices that are signed in to iCloud with the same Apple ID. You always see the latest version of your presentation, no matter where you made your last edits.
For seamless syncing of presentations, use iCloud Drive, iOS 8 or later on your devices, and OS X 10.10 or later on your Mac computers.
You can also use Keynote for iCloud to create and edit Keynote presentations using a supported web browser on a Mac or Windows computer.
Tap Settings on your Home screen, then do one of the following:
If you’re already signed in: Tap your name at the top of Settings.
If you’re not signed in with an Apple ID: Tap “Sign in to your iPad” and enter your Apple ID, or request an Apple ID, then sign in. Follow any instructions to authenticate.
Important: If you forgot your Apple ID or its password, you can recover it on the Apple ID website. Though you can have more than one Apple ID, it’s not recommended. iTunes Store and App Store purchases made with one Apple ID can’t be merged with those made using another Apple ID.
Tap iCloud, then scroll down and turn on iCloud Drive.
Scroll down, then turn on Keynote.
This setting allows Keynote presentations to sync across your devices.
When iCloud is turned off for Keynote on this device, edits you make or new presentations that you create aren’t saved to iCloud. Presentations that are newly created or changed on other devices or on your computer aren’t available in Keynote on this device.
See the Apple Support article Set up iCloud Drive for more information.
Here are a few things to keep in mind about using iCloud to manage your presentations across devices:
If you edit then close a presentation when you’re not connected to the Internet, you see a cloud icon on the presentation thumbnail. The next time you connect to the Internet, the edited presentation is saved to iCloud.
If you edit a presentation on multiple computers or devices and don’t allow time for your edits to sync, you will see conflicts. If you do get a conflict, you can choose to preserve any or all of the versions. (This applies only to presentations not shared with others).
If you delete a presentation, you can choose whether to delete it from Keynote on all your devices or only the one you’re using. If you delete it on only the device you’re using, it appears in the presentation manager with an iCloud badge in the corner; tap the thumbnail to download the presentation again. Deleting a presentation that someone shared with you removes it from your iCloud Drive and from Keynote on all your devices. You can tap the shared link again to add the presentation back to your iCloud Drive, where it becomes available on all your computers and devices that have iCloud turned on.
If you use folders to organize your presentations, the same folder organization applies on all your devices.
If you add a password to a presentation on one device, it’s required to open the presentation on all your devices.