How to disable JavaScript in Firefox 23 and above

The Mozilla team, which develops the popular Firefox browser, introduced new simplified browser settings with the release of version 23.  One of the settings which disappeared from the user interface is the one to control JavaScript. In previous versions of the browser, you were able to enable or disable JavaScript with a simple checkbox. But, starting with version 23, Firefox does not have it any more. Mozilla claims that most modern websites are unusable without JavaScript.

Today we will look at why you might want to disable JavaScript in Firefox and how you do it.

How to disable the built-in PDF viewer in Firefox

Firefox 19 comes with a built-in PDF viewer. It looks like this:

PDF viewer in Firefox

Although I like this new feature, because it works fast and looks smooth, you might want to disable it for whatever reason (for example, if the full PDF is not rendered perfectly) . Read below to see how.