Finally, the wait is over. Now Firefox users can read PDFs in the browser without an another plugin, just like Google Chrome browser. The built-in PDF viewer is the most noteworthy change. You can work with PDFs opened in Firefox’s tabs much as you can with other PDF apps: change the size view, search within the document, see page thumbnails, print, and save to disk. You can also bookmark the PDF in Firefox.
New Firefox 19 also adds startup performance improvements, new features for developers, and the usual bug fixes. you can download the latest update for your Windows, Mac, and Linux. See the whole change log or download Firefox 19 from this link.