How to Save PDFs to the Cloud Jan 27, 2022 — From the System Preferences > iCloud > Cloud, select the Documents folder. · Add the document you wish to save to the cloud, then click Save. This feature is enabled only for iCloud documents which were created in macOS Sierra. I've only tested the iOS app with iOS 11.3, but I'm hoping to see this functionality in an update for iOS 11.4 just a few days from now. I'd also love to see the same functionality for iOS 8.3 as well.