View PDFs in Firefox 5 Jun 24, '11 07:30:00AM • Contributed by: alexiskai To date, people who wanted to view downloaded PDFs on a Mac have had three options: Use Safari's in-line PDF viewer plug-in to view PDFs in Safari. Use Firefox v3 and the Firefox PDF plug-in for Mac to view PDFs in Firefox. Use a current version of Firefox, download the PDFs, and view them in a PDF reader app. That's right -