As you might have noticed, PDF Viewer doesn't have a manual save button. That's because you don't need one, as PDF Viewer automatically saves your files!PDF Viewer for Android

PDF Viewer saves your files when:

  • Closing the document
  • Switching to a different document
  • The application is moved to the background (e.g. by pressing the home button)
  • Tapping the activity button
  • The configuration has changed (change of device orientation, locale, added keyboard, etc.).
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