من اجمل الامتدادات

ok

bad and good, 50 and 50

этот кусок говна не умеет даже перевести выделенный фрагмент текста на странице

You have to click on the source language name to change it. I've chose: detect the language.

But when I select a text, it's not send in the translation window.

The next time you use it, it keeps in memory the last language pair I used, it's not always the behaviour I expect. Please, add more customization.