Firefox 19.0.0 was sent to the release channel today by Mozilla. Although the release includes the usual long list of bug fixes, the release does not include security updates. Firefox 19 does include a new addition, a built-in PDF viewer.
Using Firefox PDF ViewerIt is important to note that the addition is just that, a viewer. It is not possible, for example, to use it for completing fill-in forms. However, when using the viewer, the option is available in the right-hand corner of the viewed file to "Open with a Different Viewer".
As illustrated below, the built-in .PDF reader can be enabled or disabled via the Tools > Options > Applications tab.
With a default PDF program set on the computer, the first option is presented when clicking a PDF file:
To select Firefox for viewing the file, navigate to where you have Firefox installed on your computer; i.e., C:\Program Files (x86)\Mozilla Firefox\Firefox.exe and select it. The PDF will then be viewable in Firefox.
When the PDF is opened in the built-in PDF viewer there may be a warning in the message bar reading, "This PDF document might not be displaying properly". It is at this point where you can elect to openthe file with a different viewer.
The Release Notes include additional changes and fixed features in version 19.0. For a complete note of all fixes, see the Bug Fixes in the link below in References.
UpdateTo get the update now, select "Help" from the Firefox menu at the upper left of the browser window, then pick "About Firefox." Mac users need to select "About Firefox" from the Firefox menu.
If you do not use the English language version, Fully Localized Versions are available for download.