Disable JavaScript from running in Firefox PDF Now, the ability to turn off JavaScript in PDF documents is effortless to get done, though not as straightforward as we would like.

The TOR Project is advising that people stop using Windows after the discovery of a startling vulnerability in Firefox that undermined the main advantages of the privacy-centered network.

Disable JavaScript here to get rid of it in Google Chrome on Android. On the same page, you can tap Add Site Exception, type the URL, and hit Add to allow JavaScript to run on specific websites.

To disable JavaScript in Firefox, you'll have to install a third-party add-on or use the configuration editor. For that, type about:config in the address field and accept the risk to continue.