iCloud stores your documents and keeps them up to date across your iOS devices, the web, and your computers. You always have the latest versions at hand, no matter which device you used to make your latest edits. For seamless sharing and syncing of documents, you must use iCloud Drive, iOS 8 on your devices, and OS X Yosemite on your computers.
With iOS 8, you have the option to use iCloud Drive or iCloud Documents & Data. However, if you use Documents & Data on other devices or computers with earlier operating systems after you upgrade your iCloud account to use iCloud Drive, syncing won’t work in all cases. See this Apple Support article for more information.
To use iCloud, you must sign in with your Apple ID in Settings, and make sure iCloud is turned on in Keynote.
Tap Settings on your Home screen, then tap iCloud in the list on the left.
Sign in to your account using your Apple ID, or request a new Apple ID and then sign in.
Tap iCloud Drive (or Documents & Data) and turn it on.
Turn on Keynote.
This setting allows Keynote to store presentations in iCloud.
In the list on the left, scroll down to the apps at the bottom.
Tap Keynote, then turn on Use iCloud.
When iCloud is turned off in Keynote on this device, edits you make or new presentations that you create aren’t saved to iCloud, and new or changed presentations on other devices or on your computer aren’t available in Keynote on this device.
Here are a few things to keep in mind about using iCloud to manage your presentations across devices:
If you edit and then close a presentation when you’re not connected to the Internet, an upward-pointing arrow appears in the presentation thumbnail. The next time you connect to the Internet, the edited presentation is saved to iCloud.
If you edit a presentation on more than one computer or device before your edits are saved, you will see conflicts. Make sure the app has had time to save your changes to iCloud before editing the same presentation on another device. If you do get a conflict, you can choose to preserve any or all of the presentations you edited.
If you delete a presentation, it’s deleted from iCloud and from Keynote on all your devices.
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, the password is required to open the presentation on all your devices.
In addition to Keynote on your Mac, iPad, and iPhone or iPod touch, you can use Keynote for iCloud beta on the web. Keynote for iCloud beta is a web app you can use to create and edit Keynote presentations using a supported web browser on a Mac or Windows computer. You can access it by logging in to your account on iCloud.com.
Presentations you create using Keynote for iCloud beta are automatically available in Keynote on your Mac or iOS devices that are set up to use iCloud—and vice versa. If you create a presentation using Keynote on an iOS device or a Mac, the presentation appears automatically on the web in Keynote for iCloud beta. See Keynote for iCloud beta Help for more information.
To use Keynote for iCloud beta, you need to upgrade your iCloud account to use iCloud Drive.