You can share your PDFs with other people or apps.
- Open the PDF document you would like to share.
- Tap the share button in the action bar on the top of the screen.
- Select an the app extension from the share sheet, or select the "Open In" extension to see a list of apps that can open the PDF. Some extension have options. For example: the note to add the PDF to in Apple's Notes app.
- Tap "Save" or "Done" to complete the action.