Awesome Addon!
But please consider: It's still in it's early phase. There will be more in the near future i believe.
I use it to learn italy right now and that works fine on english websites.

I use Toucan to learn Japanese and so far, my experience has been great! Of course, like any other language learning app, there are limits to how much of the language you can learn through it, but as far as learning vocabulary (and in the case of Japanese, the alphabets) goes, I think this is a fantastic concept!
Of course, since Toucan is an ever-developing add-on, there are things I would like to see that would make it an even better experience, such as including some kanji along with the hiragana and katakana in the case of Japanese, or translating some phrases to immerse the user even more in aspects of the language such as syntax (but I realize that is probably much harder to implement).
The dev team is really communicative and it seems to me that they really care about providing the best possible user experience, which is another huge plus. I'll definitely let them know about what I feel is missing in the current version.
Full disclosure, the Toucan team generously supplied me with a month of premium membership to fully try the add-on out, but I believe that everything I said also applies to the free version.

im leaving a one start review untill toucan will start taking context into account and learn how to translate compound words. is there any ai or anything at all that tries fixing those issues?

edit: and it doesnt work on youtube? so lame

Works really well, really helps me with Japanese. Sadly, using it on DuckDuckGo (my primary search engine) drastically slows down the site and I might have to uninstall it if that's not fixed because that makes it unusable.
If this will be fixed, I will take it to five stars because it deserves it.

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i saw this extension via Enhancer for Youtube sponsor but i dislike that the partner link goes to your site rather than the extention itself in addon.mozilla so i didn't use that link

it would also be better if you are recommended by Mozilla. its much easier to trust them. for now lets just see how good is this

Edit: some words dont have romanji words on them sadly

Great idea, poorly executed. Keyboard shortcuts where are they? Login was a nightmare on Firefox browser. I have other extensions that use text highlighting to function, unless Toucan can figure out a way to allow users to customize this, it'll break all the extensions that use it. Sorry guys, back to the kanban board for ya'll

One of the easiest and most convenient tools for learning as you go. Excited that it's finally available on Firefox.

I've been waiting for this review to get added to firefox. Now that it's finally here, I'm loving it! It was a little jarring at first, but once you get used to it it's great.

Awesome app, learning a new language as I'm reading articles/browsing/etc.

C'est efficace

:) wonderful

Depuis le temps que j'attends cette extension sur Firefox... Merci !

Fonctionne à merveille.

Came here from Chrome, where this is a popular extension. Can't believe I'm only the second Firefox user of this, the thing's great.