Bjarne Verschorre

Why it is useful

When installing an extension that is more unknown, you can check the source code to see if it is safe to use.

How to do it

1. Go to the extension page on the Firefox Add-ons website.
2. Right-click on the “Add to Firefox” button and select “Copy Link”.
3. $ curl -L <link> > /tmp/extension.xpi
4. $ unzip /tmp/extension.xpi -d /tmp/extension/

Now you can check the source code in the /tmp/extension/ directory.