How to set up translation of pages into Russian in Firefox, just like in Chrome?

Question

Machine translation from one language to another

I would like to translate in one click from any languages, as in this video:
https://youtu.be/6eHqN5MWtQY

Answer 1

fox has had native support for translations for a couple of years now, but with its pluses and minuses
plus - a Google translator is nailed in chrome, and in fox you can choose one of three (Google, Bing, Yandex)
minus - each of the translators needs a key to use translation services from the respective companies (Google, Bing, Yandex), which is natural, since none of these giants will give competitors advantages for their own resources for nothing. Although their keys can be obtained for free (?), But as far as I remember, Google and Bing had a pretty hemorrhoid, the only thing for Yandex to do this was just to have your own profile (create or have mail with them) and follow the link https:/ /translate.yandex.ru/developers/keysand then copy the resulting key to the browser.translation.yandex.apiKeyOverride (about:config) field
in general, for Yandex it will look something like this:
firefox --> about:config

browser.translation.detectLanguage=true
browser.translation.ui.show=true
browser.translation.engine=Yandex
browser.translation.yandex.apiKeyOverride=КЛЮЧ

see also - Firefox will support translation of pages when ...
p.s.
By the way, in the future, Fox may have its own translation base independent of external players or even services, that is, the client itself will have the possibility of offline machine translation, see Bergamot
Mozilla is developing its own machine translation system...

Answer 2

https://github.com/sienori/simple-translate

Answer 3

For those interested in following developments, here is the bug report on BugZilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=971044