They won't be available nor can they be. Firefox on iOS will be a Firefox UI over Mobile Safari, like all other browsers on iOS. Firefox's extensions are made t

They won't be available nor can they be. Firefox on iOS will be a Firefox UI over Mobile Safari, like all other browsers on iOS. Firefox's extensions are made to work with the rendering engine in proper Firefox as you'd use on Windows, Mac, Linux, and Android. Platforms where you can install your choice of browser.