nofollow" href="https://addons.mozilla.org/en-US/firefox/addon/google-translator/">Google™ Translator (Add-on SDK) addon, but completely re-written with web-extensions API. This addon is more robust and has better performance comparing to the old Google™ Translator addon, which was written with addon-sdk API. Please note, this new addon might have fewer options comparing to the addon-sdk version, but this is due to the limitations in web-extension API. Google™ Translator is a fast and handy translator built on top of the Google Translate for everyday use. Note 1: Google™ Translator does NOT belong or relate to the official Google Translate application or website at all. It is basically an unofficial addon that is developed and maintained independently. This addon supports translation to all available languages and provides 5 core functionalities: (1) Easy translation through a menu-bar popup window. (2) Translation of a single word though double-click within any webpage. (3) Translation of lengthy texts by selecting text while holding "Alt" key. (4) Transferring selected text with Google Translator though right-click context menu item. (5) Spell check and automatic corrections for the input word. Note 2: to change toolbar-panel size please see the addon's options page.