How to install Firefox browser extension file

Recently I heard that Firefox browsing is not bad. I found it has the most extended files in use. How do I install these extension files?

Answer: The extension file is usually in xpi file format (ending with .xpi). There are three installation methods:

1. Drag and drop directly to the Firefox browser window. In the or extension window

2, click on 'Menu' - "Tools" - ''Extension'', drag the .xpi file into the pop-up window, you can see later Go to Firefox and ask if you want to install this plugin, click Yes, and restart Firefox browser

3, right click on the xpi file, select the open mode, select firefox in the open mode, set the association. The xpi file is automatically installed