Language Support


Google Translator for Firefox Requires Restart Featured

With this addon you can translate any text to your own language with one click or hot-key. You can either translate the selected text, this way the translated text will overwrite the original selected text, or you can translate the full page too.

Rated 4 out of 5 stars (354)
22,659 weekly downloads

S3.Google Translator Requires Restart Featured

S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.

New Feature: Language learning!

Rated 5 out of 5 stars (380)
14,143 weekly downloads

Google Translate, ImTranslator, Dictionary, TTS Requires Restart Featured

ImTranslator translates text, words, webpages between more than 90 languages.
NEW: Inline Translator, Dictionary, access to Google Translate, Microsoft Translator. Unique on the fly localization.

Rated 4 out of 5 stars (463)
13,169 weekly downloads

To Google Translate

Highlight text on a web page, right click and select To Google Translate for translate or play the previous text. EN-to-ES.

Marque un texto en una página web, de clic derecho y seleccione To Google Translate para traducir o reproducirlo. EN-a-ES.

Rated 5 out of 5 stars (11)
2,506 weekly downloads

Wiktionary and Google Translate Requires Restart

(former Google Dictionary and Google Translate)

In-line dictionary for any word you point to or double-click; whole page translation of any web page in another language.

Rated 4 out of 5 stars (213)
2,486 weekly downloads

Grammarly for Firefox

Grammarly’s free spelling and grammar checker ensures that everything you type is easy to read, effective, and mistake-free. As you type, Grammarly underlines spelling mistakes and grammatical errors and helps you fix them on the fly.

Rated 3 out of 5 stars (53)
1,880 weekly downloads

Google™ Translator Lite Featured

a powerful tool to translate words or sentences

Rated 4 out of 5 stars (33)
1,685 weekly downloads

gtranslate Featured

With gtranslate you can translate any text in a web page just by selecting and right-clicking over it. The extension uses the Google translation services to translate the text.

Rated 4 out of 5 stars (520)
1,633 weekly downloads

Google Selection Translate - For AltKey

Selecting text and holding alt key, translated results will show up on current web pages. No need to leave current web pages. Translate results come from Google Translate.

Rated 4 out of 5 stars (9)
1,418 weekly downloads

Instant Translate: Select and Translate

Translation, text-to-speech, transliteration on pages and in the pop-up for 100+ languages.

Rated 4 out of 5 stars (32)
1,338 weekly downloads

Simple Locale Switcher Requires Restart

An easier management of the user interface language

Rated 5 out of 5 stars (8)
1,191 weekly downloads

Quick Locale Switcher Requires Restart

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Rated 3 out of 5 stars (88)
1,136 weekly downloads

Google Translate Menu

Simple Google Translate in Menu (Right Click)

Rated 4 out of 5 stars (9)
990 weekly downloads

Text to Voice Requires Restart TTS gives Firefox the power of speech. Select text, click the button on the bottom right of Firefox window and this add-on speaks the selected text for you. Audio is downloadable.

Rated 4 out of 5 stars (184)
925 weekly downloads

rikaichan Requires Restart

Japanese to English/German/French/Russian dictionary. Just hover the mouse on top of a word, and a popup appears. Automatically de-inflects verbs and adjectives. Detailed kanji view...

Rated 5 out of 5 stars (92)
877 weekly downloads


LinguaLeo Translator is the most useful way to get translations of English words on any page online. Just click twice and you will get its translation. Our extension also allows you to translate any phrases.

Rated 3 out of 5 stars (109)
775 weekly downloads

Dictionary (Google™ Translate) Anywhere Featured

"Dictionary (Google™ Translate) Anywhere" extension provides access to a floating multilingual Google Translate panel on any webpage.

Rated 4 out of 5 stars (34)
766 weekly downloads

Rikaichan Japanese-English Dictionary File Requires Restart

This is a dictionary file add-on for the Rikaichan extension.

Rated 5 out of 5 stars (6)
697 weekly downloads

Language Manager Requires Restart

Language Manager, Designed to manage language packs for Firefox web browsers this easy to use utility make it easy to manage installed language packs and always have the latest language pack installed.

Rated 4 out of 5 stars (8)
664 weekly downloads

Locale Switcher Requires Restart

Displays a menu item for switching the application locale.

Rated 4 out of 5 stars (26)
650 weekly downloads