Fix for Google Translator addon (broken API)
The addon stopped working because Google discontinued the google.com/async/translate endpoint it relied on, as well as the TKK token system used as fallback.
Solution: Replace the _getEmbedTranslation function in lib/common.js with a call to the stable translate.googleapis.com/translate_a/single?client=gtx API, which requires no token and returns clean JSON.
The new endpoint URL pattern:
h t t p s://translate.googleapis.com/translate_a/single?client=gtx&sl={from}&tl={to}&dt=t&dt=bd&dt=rm&dj=1&q={word}
The response is parsed via data.sentences[].trans to extract the translation, and data.src for the detected source language.
The returned object structure is kept identical to the original so the rest of the addon works without any other changes.
How to apply: Open the .xpi file with 7-Zip, navigate to lib/common.js, and replace it with the patched version.

The best UI to translate unfamiliar word or phrase.

Finally an extension that can automatically translate the text and doesn't require to click something! I also love the ability to change the colors and overall the plethora of options!

5/5 for me!!!

Очень классный переводчик, мне очень нравится. Всем рекомендую

Leve, prática e não te faz perder o foco na leitura, além de ser bastante configurável.

Justamente por ter muitas configurações, tive pequenas dificuldades no cenário onde a língua do sistema(Linux) era justamente a de origem da tradução(En->Pt)

Great extension

Translation of a single word though double-click within any webpage. This option is genious!

Very good. Excellent

Excelente tradutor, eu recomendo...