HOWTO: Easily install Firefox extensions while offline
February 25, 2009

before

You can add an ‘Install’ button to Firefox’s add-ons pane by tracking down the following line in ‘about:config’:

extensions.hideInstallButton

and double-clicking on it to toggle the Boolean value to ‘False’. Firefox should now have an install button, just as Thunderbird does, for offline installation of extensions.

after

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