Firefox open pdf downloads before saving
17 Aug 2019 In the Firefox Android app, open the browser's main menu and select Page > Save as PDF to download the file to your device. When you're Troubleshooting Opening, Viewing, or Printing Adobe Acrobat PDF Files 'Action' column and select 'Use Adobe Acrobat (in Firefox)' or 'Use Adobe Acrobat (default)'. XFA-based PDF forms allow users to fill-in and save PDF forms locally.