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About this Add-on
Starting with Firefox 29 or IsAdmin 2.5, the IsAdmin button can also be placed on the navigation toolbar instead of the add-on bar.
This add-on will become unavailable once Mozilla drops support for XUL add-ons. It will not be possible to port this add-on to the restrictive WebExtensions system. Why not try the Pale Moon browser instead? It supports this add-on and many more.