Über
navigator.oscpu
lässt sich trotzdem die echt benutzte Windows-Version abfragen.

Review guidelines

This add-on can: Access your data for all websites

Really now? How about no. Why even such simple addon want ALL OUR DATA

非常好用，可以针对不同的网页设置不同的ua

Appreciate it, but testing websites are still able to detect my real browser in what they call the "core" browser being used. Hopefully something can be done.

Thanks a lot for excellent addition and also that returned support "to Firefox 52.0" and above.
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Спасибо большое за отличное дополнение, а также за то что вернули поддержку "Firefox 52.0" и выше.