If you’ve deleted a presentation or want to reverse recent changes from an existing one, restoring a previous version of your document is a simple process on Presenter for Mac.
You have various options to recover your previous work, either through the iA Presenter app or iCloud. iA Presenter for Mac comes with built-in support for iCloud Drive. In addition to the advantages of document synchronization across devices, users also benefit from the extra security provided by online recovery tools available in iCloud.
To revert to a previously saved version of a presentation, simply select the File menu → Revert To, then select if you want Last Opened/Previous Save or to Browse All Versions…
Reverts the document to the last opened version or the previously saved version of the file.
Opens a new window where you can select from a list of previously archived versions. (Requires iCloud to be enabled for iA Presenter)
You can use the arrows to navigate through the list or select the desired date from the timeline, then press Restore to revert your document to this state.
Deleting a document from iA Presenter is done by right-clicking on it from the File List and selecting Move to Trash. Naturally, the initial step to recover your presentation is to access the Trash folder on your Mac.
As explained in details on this Apple Support Page, please note:
To restore deleted presentations from your Mac, navigate to the Trash folder, locate the desired document, and manually restore it with a right-click and selecting Put it back.
If you work on important files, we highly advise setting up Time Machine on your Mac with an external storage device for added security. Discover how to configure Time Machine and oversee backups by visiting the Apple Support Site: Use Time Machine.
Still on the Apple Support Site, you will find a step-by-step tutorial to restore a document from Time Machine.
Deleted iCloud files can be restored for up to 30 days, from either the iCloud’s Restore Files (A) or the Recently Deleted folder (B).
Files deleted within the app are sent to the Recently Deleted folder. To recover these files:
For the most up-to-date instructions on using iCloud recovery, please see the following Apple resource.
Many cloud storage providers preserve multiple versions and backups of your documents for up to 30 days.
We recommend visiting your cloud storage provider’s desktop/web console to see what options are available. For some of the most popular options please see:
Dropbox | Google Drive | OneDrive
If you are experiencing a problem that our support section doesn’t solve please reach out to us. We take a break on the weekends (JST), but during weekdays we aim to reply within 1-2 business days.
Story 
The first interface you see when opening the app, and where you write your content.
Preview, reorder, duplicate or delete your slides.
Lost your progress in a presentation? Wishing you hadn't deleted that slide? No worries!
Turn an existing Markdown text into a presentation in seconds.
Navigate the app more efficiently by learning the shortcuts available in Presenter.
The default presentation you see when opening Presenter: a fun tutorial to get you started.