Is there a way to enable the option to download into PDF in Firefox.
Release : 16.0.3
In the Tools menu, select Options.
In the Options dialog, go into the Applications tab.
Search for and select Portable Document Format (PDF) in the Content Type list.
In the Action list, click on the drop-down arrow. Here you can specify how you want Firefox to handle PDF files.
Note: Once you make the changes, please close all the browsers, flush the "all cache" for Firefox, relaunch Firefox and export into PDF.