Test your sites against soon-to-be-released { -brand-name-firefox } browser features with powerful, flexible DevTools that are on by default.
Testujśo planowane funkcije wobglědowaka { -brand-name-firefox } nowego wózjawjenja z mócnymi, fleksibelnymi wuwijarskimi rědami, kótarež su zmóžnjone pó standarźe.