Quick Accept-Language Switcher – 🦊 Firefox (ja) ε‘γ‘ζ‹‘εΌ΅ζ©Ÿθƒ½γ‚’ε…₯手

Firefox 向け Quick Accept-Language Switcher をダウンロード。Provides a quick way of changing the HTTP Accept-Language header so you can view and test websites with a different locale.