I finally found a web add-on that implements translation into Russian with a convenient pop-up window, icon, right on the web page, with a good font size. Thank you very much, developers, I shake your hands!

This is the best app for in-line translation, this is the only thing i liked Google Chrome for. But now you have brought it exactly to Firefox! Perfect

Better then most of the higher rated ones here, works exactly like google translate like on Chrome!

روووعه

NICE！

Ottima!!