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|User since||January 23, 2013|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
I'm impressed that this seems to take into account the scroll bar; that is to say, the number is exactly the page width sans scroll bar. Everything else I've used so far gives me the width including the scroll bar, and that is not useful. Thanks for this simple yet effective tool!This review is for a previous version of the add-on (1.3).