Please add the functionality:
1) Make a choice of translator: Google or Yandex.
2) Translate all the old pages in the same tab, not in a new one. This is done by the plugin https://addons.mozilla.org/ru/firefox/addon/traduzir-paginas-web/

Better than the official app, but need some additional settings if I want to translate from English.

A melhor que já usei no Firefox!!

very helpful! Thanks a lot!

This one is the best of the best addons for translating. But i have to figure this out first. in first glimps it was not worthy of time.

its good but giving error that service limit most of time

insane (good)