Choose from thousands of extra features and styles to make Firefox your own.Close
|User since||January 20, 2014|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
A great add on, that you can use to identify any potential website errors. We use it all the time.This review is for a previous version of the add-on (1.12.6).