@Anonymous then those 2 articles are your only help. https://connect.mozilla.org/t5/ideas/get-built-in-translation-feature/idi-p/5347https://connect.mozilla.org/t5/ideas/translation-add-on-firefox-for-android/idi-p/286 Also do you want a in-built translation like other mobile browsers or do you want to have a add-on what now is available. If it goes in-built then it will be different then those chromium browsers because mozilla will use there own translation. The problem with that it hasn't many languages. The solution i got from someone is copy the website link into the google translate site and open the website with that. I do this for japanese websites until japanese is supported by firefox-translations. I also use this in firefox focus because if im done then is everything deleted. Also use a vpn for more protection.
@Andre_Natal i think it's a great idea to add firefox-translations add-on to firefox android soon because of the inbuilt translation feature that is in development. July -> android nightly, August -> android beta, September -> android release. To give taste of firefox-translations before it becomes inbuilt. For nightly and beta people who don't use collection and for release people who don't have collection. More people will use it and they will be ready to use it when it becomes inbuilt. I don't know if it is ready to do this but if it can then do it to make firefox-translations great among mobile users.