QuickTranslate DeepL

Rated 1 out of 5 stars

by kmpres on Abr. 7, 2026 · permalink

So far this add-on has been a disappointment. The add-on refuses to load into Thunderbird or Firefox even though I downloaded the xpi file directly from Firefox's own homepage. Following either Firefox's or AI instructions it is supposed to be installed by either dragging and dropping it into a Firefox window or loaded via their "Install Add-on from file" applet. Both methods produce the same error: "This add-on could not be installed because it has not been verified"-- whatever that means. It is therefore useless. If someone can give me some clarity on this I'd appreciate it.