Print to Size has its own file format that you can use to save a page and reopen it later.
To save your work for later
- Tap on the Print icon
- Tap on Save for Later
- Choose a location where you wish to save your document (for example iCloud)
To resume your work
- On your iOS device, find the document at the location your exported it to, and tap on it
- Choose “Open in Print to Size”