This tag is to be used for questions about using plugins with the Tor browser or other Tor software.
Plugins are software additions that allow for the customization of computer programs, apps, and web browsers -- as well as the customization of the content offered by websites. For example, Adobe Flash (no longer supported in most browsers), used to let you view many types of media through swf files in your browser. Most plugins are now no longer being used in browsers however. The Tor browser also disables the use of plugins as they pose a severe security risk and can deanonymize Tor users by being manipulated into revealing the user's IP address.