Firefox can be upgraded using extensions and plug-ins that help us meet most of our requirements. You would definitely like to get an overview of the add-ons that you have already installed or com~ across. However, there is no menu command for this. ~ Firefox distinguishes between extensions that you can manage and configure using the menu and plug-ins that you cannot access directly. Plug-ins are DLL files which are used to run other applications in the browser window and for instance, to display PDF documents directly on screen.

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To know more about the installed plug-ins, first change a setting in the extended configuration of the browser. Enter 'about:config' in the address line and press enter. Search for the 'plugin. expose_full_path' setting in the list. Double-click it in order to change the value to 'true'. You thus see the file names of the plug-ins with the full path.