# Select a file in any application that prints and open it. # Choose “File” > “Print”. # Choose “Adobe PDF” from the list of printers in the print dialog box. # Click "Print" to use the Acrobat PDF printer. # Click “OK” and enter a new file name for your PDF. Save to your desired location.

You get tabs opening endlessly if you select Firefox as the application to handle a file when you get an "Open with" dialog. *https://support.mozilla.org/en-US/kb/firefox-repeatedly-opens-empty-tabs-or-windows You need to set the action for Portable Document Format (PDF) to "Open in Firefox". *Options/Preferences -> General -> Applications *https://support.mozilla.org/en-US/kb/change-firefox-behavior-when-open-file ---- *https://support.mozilla.org/en-US/kb/view-pdf-files-firefox *https://support.mozilla.org/en-US/kb/disable-built-pdf-viewer-and-use-another-viewer