How to disable built-in PDF viewer of Firefox 19

As we have mentioned in the earlier post, the main feature of Firefox 19 is it’s built-in PDF viewer. But if you still prefer to use a third-party tool for this then you can easily turn off the built-in viewer.

If you wish to change the default PDF viewer, you can do it by going to Options -> Applications tab. There search for PDF and select the required option from the list.

Default pdf reader firefox

Or else you can completely disable the built in PDF viewer by going to about:config. Type about:config in address bar and press enter. Click on I’ll be careful, I promise. In that page search for pdfjs.disabled. Set its value to true and you are done.

Default pdf reader firefox 2



Firefox 19 is now available for download! What’s new?

firefox2-300x225Mozilla has recently released the final build of Firefox web browser, Firefox 19. Though this isn’t a revolutionary version there are few important changes implemented in this version.  A built-in PDF viewer is the most important one, for which users were waiting since long. Which means you no longer need to use third-party plugins for opening PDF files within your browser window. See the list below to know other important changes.

What’s New (From the release notes)

  • NEW : Built-in PDF viewer
  • CHANGED : Canvas elements can export their content as an image blob using canvas.toBlob().
  • CHANGED :Startup performance improvements.
  • DEVELOPER :Debugger now supports pausing on exceptions and hiding non-enumerable properties.
  • DEVELOPER : Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true).
  • DEVELOPER :There is now a Browser Debugger available for add-on and browser developers (experimental, set to true).
  • DEVELOPER : Web Console CSS links now open in the Style Editor.
  • HTML5 : CSS @page is now supported.
  • HTML5 : CSS viewport-percentage length units implemented (vh, vw, vmin and vmax).
  • HTML5 : CSS text-transform now supports full-width.
  • FIXED : Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages.
  • FIXED : Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode.
  • FIXED : Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode.

Download Firefox for Windows, Mac, Linux and Android

Incoming search terms for the article:

What is Firefox Master Password and why you should use it? [Tip]

Here at TFG we have shown you how you can see saved Firefox passwords. It is a very useful feature for people like me who always forget their password. But what Mozilla Firefoxwhen you are sharing your computer with  others? Anybody can access the passwords stored in your Firefox.

To protect these stored logins Firefox has one additional feature  called “Master Password“. Most of us would have seen this at some time in the Firefox options window but never thought of using it. If you are not using this feature, you must start using it now for your own safety. Follow the steps given below to create a new master password on Firefox.

  1. At the left top of the window inside the Firefox browser, click on the “Firefox” button.
  2. In the menu click on “options”.
  3. In the pop-up window click on “Security” tab.
  4. Check  “Use a master password” option.
  5. Enter and confirm your password.
  6. Click  on “Ok” to create master password.
  7. Master password for your Firefox browser is activated.

Such small things, if taken care of can save you from big troubles in future.