You can automatically sync your Slides decks to Dropbox for backup and offline access. Open the Export panel in the editor sidebar and follow the Dropbox instructions.
Once enabled, your decks are copied to Dropbox each time you save. To view a deck offline, open its HTML file from the /Apps/Slides App directory in Dropbox.
One-way sync
Files are copied from Slides to Dropbox only. Changes made to files in Dropbox are not copied back to Slides.
Speaker view
The exported presentation includes a speaker view and any speaker notes you added in Slides. Press S while the presentation is open in a browser to launch it.
Disconnect Dropbox
To stop syncing, open your Dropbox app settings and remove Slides from the list of connected apps.