 The Next Web | Firefox 19 launches with built-in PDF viewer on desktop, theme support and ... The Next Web Mozilla on Tuesday officially launched Firefox 19 for Windows, Mac, Linux, and Android. The improvements include a built-in PDF viewer on the desktop and theme support on Google's mobile platform. The new desktop version was already available ... Firefox 19 now available for desktop and Android devices Firefox 19 Launches With Built-In HTML5-Based PDF Viewer, Android Version ... Firefox for Android gets all new inbuilt PDF viewer |