Dictionaries & Language Packs
Installing a dictionary add-on will add a new language option to your Thunderbird spell-checker, which checks your spelling when you fill out Web forms. Language pack add-ons change the language of the entire application.
Available in your locale
| Language | Dictionary | Language Pack | |
|---|---|---|---|
| English (US) | English (US) |      Download Dictionary (189.3 KiB) Download Dictionary (1.6 MiB) Download Dictionary (206.6 KiB)  | 
               Download Language Pack (669.4 KiB)  | 
        
All locales
| Language | Dictionary | Language Pack | |
|---|---|---|---|
| Afrikaans | Afrikaans |      Download Dictionary (917.2 KiB)  | 
             Download Language Pack (306.6 KiB)  | 
      
| Albanian | Shqip |      Download Dictionary (649.4 KiB)  | 
             Download Language Pack (500.4 KiB)  | 
      
| Amharic | አማርኛ |      Download Dictionary (673.0 KiB)  | 
        |
| Arabic | عربي |      Download Dictionary (802.5 KiB)  | 
             Download Language Pack (425.0 KiB)  | 
      
| Aragonese | aragonés |      Download Dictionary (86.2 KiB)  | 
        |
| Armenian | Հայերեն |      Download Dictionary (196.4 KiB)  | 
             Download Language Pack (473.5 KiB)  | 
      
| Assamese | অসমীয়া |      Download Dictionary (319.5 KiB)  | 
        |
| Asturian | Asturianu |      Download Dictionary (253.2 KiB)  | 
             Download Language Pack (330.1 KiB)  | 
      
| Azerbaijani | Azərbaycanca (az-ir) |      Download Dictionary (53.7 KiB)  | 
        |
| Bambara | Bamanankan (bm-ml) |      Download Dictionary (79.6 KiB)  | 
        |
| Basque | Euskara |      Download Dictionary (826.4 KiB)  | 
             Download Language Pack (465.1 KiB)  | 
      
| Belarusian | Беларуская |      Download Dictionary (3.7 MiB) 
    Download Dictionary
    (3.8 MiB)
            | 
             Download Language Pack (509.1 KiB)  | 
      
| Bengali (Bangladesh) | বাংলা (বাংলাদেশ) |      Download Dictionary (1.8 MiB) Download Dictionary (447.2 KiB)  | 
             Download Language Pack (660.4 KiB)  | 
      
| Breton | Brezhoneg |      Download Dictionary (1.2 MiB)  | 
             Download Language Pack (392.6 KiB)  | 
      
| Bulgarian | Български |      Download Dictionary (1.1 MiB)  | 
             Download Language Pack (530.9 KiB)  | 
      
| CT Cornish Spell-Checker - SWF (kw-gb) |      Download Dictionary (113.5 KiB)  | 
        ||
| Catalan | Català |      Download Dictionary (733.2 KiB)  | 
             Download Language Pack (429.1 KiB)  | 
      
| Catalan (Valencian) | Català (Valencià) |      
    Download Dictionary
    (863.5 KiB)
           
    Download Dictionary
    (734.3 KiB)
            | 
             Download Language Pack (163.0 KiB) 
    Download Language Pack
    (687.0 KiB)
            | 
      
| Chichewa Spell Check (ny-mw) |      Download Dictionary (18.0 KiB)  | 
        ||
| Chinese (Simplified) | 中文 (简体) |      Download Language Pack (501.6 KiB)  | 
      |
| Chinese (Traditional) | 正體中文 (繁體) |      Download Language Pack (505.1 KiB)  | 
      |
| Croatian | Hrvatski |      Download Dictionary (222.5 KiB)  | 
             Download Language Pack (458.6 KiB)  | 
      
| Czech | Čeština |      
    Download Dictionary
    (572.3 KiB)
           Download Dictionary (935.6 KiB) Download Dictionary (1.5 MiB)  | 
             Download Language Pack (513.7 KiB)  | 
      
| Danish | Dansk |      Download Dictionary (2.2 MiB)  | 
             Download Language Pack (471.0 KiB)  | 
      
| Diccionario Papiamento (pap-aw) |      Download Dictionary (51.0 KiB)  | 
        ||
| Dikshonario Papiamentu (pap-cw) |      Download Dictionary (51.9 KiB)  | 
        ||
| Dutch | Nederlands |      Download Dictionary (750.7 KiB)  | 
             Download Language Pack (476.5 KiB)  | 
      
| English (Australian) | English (Australian) |      Download Dictionary (239.9 KiB) Download Dictionary (1.5 MiB)  | 
        |
| English (British) | English (British) |      Download Dictionary (432.9 KiB) Download Dictionary (376.0 KiB)  | 
             Download Language Pack (447.0 KiB)  | 
      
| English (Canadian) | English (Canadian) |      Download Dictionary (180.4 KiB)  | 
             Download Language Pack (442.7 KiB)  | 
      
| English (New Zealand) | English (New Zealand) |      Download Dictionary (258.0 KiB)  | 
        |
| English (US) | English (US) |      Download Dictionary (1.6 MiB) Download Dictionary (206.6 KiB) Download Dictionary (189.3 KiB)  | 
             Download Language Pack (669.4 KiB)  | 
      
| Esperanto | Esperanto |      Download Dictionary (96.8 KiB)  | 
        |
| Estonian | Eesti keel |      Download Dictionary (842.4 KiB)  | 
             Download Language Pack (432.0 KiB)  | 
      
| Estonian | Eesti keel (et-ee) |      Download Language Pack (176.0 KiB)  | 
      |
| Eʋegbe Spelling Dictionary (eegbe) |      Download Dictionary (4.7 KiB)  | 
        ||
| Faroese Spell Checker (Faroe Islands) (fo-fo) |      Download Dictionary (563.1 KiB)  | 
        ||
| Finnish | suomi |      Download Language Pack (466.5 KiB)  | 
      |
| French | Français (fr-os) |      Download Dictionary (416.5 KiB)  | 
        |
| French | Français |      Download Dictionary (324.2 KiB)  | 
             Download Language Pack (502.4 KiB)  | 
      
| Frisian | Frysk |      Download Dictionary (1.6 MiB)  | 
             Download Language Pack (483.6 KiB)  | 
      
| Friulian | Furlan |      Download Dictionary (115.9 KiB)  | 
        |
| Gaelic (Scotland) | Gàidhlig |      Download Dictionary (1002.7 KiB)  | 
             Download Language Pack (449.7 KiB)  | 
      
| Galician | Galego |      Download Dictionary (365.6 KiB)  | 
             Download Language Pack (478.7 KiB)  | 
      
| Georgian | ქართული |      Download Dictionary (344.6 KiB)  | 
             Download Language Pack (548.5 KiB)  | 
      
| German | Deutsch |      
    Download Dictionary
    (1.2 MiB)
            | 
             Download Language Pack (499.3 KiB)  | 
      
| German (Austria) | Deutsch (Österreich) |      Download Dictionary (333.7 KiB) Download Dictionary (1.2 MiB)  | 
        |
| German (Germany) | Deutsch (Deutschland) |      
    Download Dictionary
    (332.5 KiB)
           
    Download Dictionary
    (1.2 MiB)
            | 
        |
| German (Switzerland) | Deutsch (Schweiz) |      Download Dictionary (332.8 KiB) Download Dictionary (1.2 MiB)  | 
        |
| Greek | Ελληνικά |      Download Dictionary (1.5 MiB)  | 
             Download Language Pack (601.2 KiB)  | 
      
| Greek | Ελληνικά (el-en) |      Download Dictionary (3.0 MiB)  | 
        |
| Gujarati (India) | ગુજરાતી (ભારત) |      Download Dictionary (627.3 KiB)  | 
        |
| Haitian Creole spell checker (ht) |      Download Dictionary (56.7 KiB)  | 
        ||
| Hausa | Hausa (ha-gh) |      Download Dictionary (134.1 KiB)  | 
        |
| Hawaiian spell checker (haw) |      Download Dictionary (24.5 KiB)  | 
        ||
| Hebrew | עברית |      Download Dictionary (1.1 MiB)  | 
             Download Language Pack (432.0 KiB)  | 
      
| Hiligaynon spell checker (hil) |      Download Dictionary (72.2 KiB)  | 
        ||
| Hindi (India) | हिन्दी (भारत) |      Download Dictionary (415.2 KiB)  | 
        |
| Hungarian | magyar |      Download Dictionary (714.9 KiB)  | 
             Download Language Pack (511.4 KiB)  | 
      
| Icelandic | íslenska |      Download Dictionary (653.1 KiB)  | 
             Download Language Pack (475.2 KiB)  | 
      
| Indonesian | Bahasa Indonesia |      Download Dictionary (136.5 KiB)  | 
             Download Language Pack (458.2 KiB)  | 
      
| Interlingua | Interlingua (ia-ia) |      Download Dictionary (206.6 KiB)  | 
        |
| Interlingue Spell Checker (ie) |      Download Dictionary (87.5 KiB)  | 
        ||
| Irish | Gaeilge |      Download Dictionary (372.0 KiB)  | 
             Download Language Pack (366.7 KiB)  | 
      
| Italian | Italiano |      Download Dictionary (365.0 KiB)  | 
             Download Language Pack (482.8 KiB)  | 
      
| Japanese | 日本語 |      Download Language Pack (532.6 KiB)  | 
      |
| Kabyle | Taqbaylit |      Download Language Pack (459.3 KiB)  | 
      |
| Kannada | ಕನ್ನಡ |      Download Dictionary (22.2 KiB)  | 
        |
| Kaqchikel | Maya Kaqchikel |      Download Language Pack (406.3 KiB)  | 
      |
| Kashubian | Kaszëbsczi |      Download Dictionary (1.7 MiB)  | 
        |
| Kazakh | Қазақ |      Download Language Pack (562.5 KiB)  | 
      |
| Korean | 한국어 |      Download Dictionary (898.4 KiB)  | 
             Download Language Pack (505.9 KiB)  | 
      
| Kurdish | Kurdî |      Download Dictionary (42.7 KiB)  | 
        |
| Lao | ພາສາລາວ |      Download Dictionary (43.6 KiB)  | 
        |
| Latin | Latina |      Download Dictionary (298.0 KiB) Download Dictionary (492.4 KiB)  | 
        |
| Latvian | Latviešu |      Download Dictionary (346.9 KiB)  | 
        |
| Lingala | Lingála |      Download Dictionary (25.2 KiB)  | 
        |
| Lithuanian | Lietuvių |      Download Dictionary (313.7 KiB)  | 
             Download Language Pack (441.6 KiB)  | 
      
| Lojban spell check dictionary (jbo) |      Download Dictionary (105.8 KiB)  | 
        ||
| Lower Sorbian | Dolnoserbšćina |      Download Dictionary (298.5 KiB)  | 
             Download Language Pack (511.9 KiB)  | 
      
| Lower Sorbian | Dolnoserbšćina (dsb-de) |      Download Dictionary (1.6 MiB)  | 
        |
| Macedonian | Македонски |      Download Dictionary (1.3 MiB)  | 
        |
| Malagasy | Malagasy (mg-mg) |      Download Dictionary (60.0 KiB)  | 
        |
| Malay | Melayu |      Download Dictionary (87.8 KiB)  | 
             Download Language Pack (343.1 KiB)  | 
      
| Maori (Aotearoa) | Māori (Aotearoa) |      Download Dictionary (101.9 KiB)  | 
        |
| Marathi | मराठी |      Download Dictionary (716.4 KiB)  | 
        |
| Mongolian | Монгол |      Download Dictionary (1.7 MiB)  | 
        |
| Ndebele, South | isiNdebele |      Download Dictionary (83.8 KiB)  | 
        |
| Nepali | नेपाली |      Download Dictionary (169.9 KiB)  | 
        |
| Northern Sotho | Sepedi |      Download Dictionary (218.0 KiB)  | 
        |
| Norwegian (Bokmål) | Norsk bokmål |      Download Dictionary (1.3 MiB)  | 
             Download Language Pack (470.7 KiB)  | 
      
| Norwegian (Nynorsk) | Norsk nynorsk |      Download Dictionary (891.2 KiB)  | 
             Download Language Pack (473.5 KiB)  | 
      
| Occitan (Lengadocian) | occitan (lengadocian) (oc-es) |      Download Dictionary (1.3 MiB)  | 
        |
| Occitan (Lengadocian) | occitan (lengadocian) |      Download Dictionary (184.9 KiB)  | 
        |
| Odia | ଓଡ଼ିଆ (or-in) |      Download Dictionary (1.4 MiB)  | 
        |
| Odia | ଓଡ଼ିଆ |      Download Dictionary (12.0 KiB)  | 
        |
| Persian | فارسی (fa-ir) |      Download Dictionary (358.0 KiB)  | 
        |
| Persian | فارسی |      Download Language Pack (624.7 KiB)  | 
      |
| Polish | Polski |      Download Dictionary (1.1 MiB)  | 
             Download Language Pack (509.4 KiB)  | 
      
| Portuguese (Brazilian) | Português (do Brasil) |      Download Dictionary (173.8 KiB) 
    Download Dictionary
    (173.3 KiB)
           
    Download Dictionary
    (1.3 MiB)
            | 
             Download Language Pack (481.4 KiB)  | 
      
| Portuguese (Portugal) | Português (Europeu) |      Download Dictionary (271.6 KiB) Download Dictionary (273.3 KiB)  | 
             Download Language Pack (475.5 KiB)  | 
      
| Punjabi (India) | ਪੰਜਾਬੀ (ਭਾਰਤ) |      Download Dictionary (10.6 KiB)  | 
             Download Language Pack (424.8 KiB)  | 
      
| Romanian | Română |      
    Download Dictionary
    (1.1 MiB)
            | 
             Download Language Pack (457.3 KiB)  | 
      
| Romansh | rumantsch (rm-vallader) |      Download Dictionary (478.3 KiB)  | 
        |
| Romansh | rumantsch (rm-sutsilv) |      Download Dictionary (329.1 KiB)  | 
        |
| Romansh | rumantsch (rm-puter) |      Download Dictionary (482.5 KiB)  | 
        |
| Romansh | rumantsch |      Download Language Pack (477.3 KiB)  | 
      |
| Romansh | rumantsch (rm-surmiran) |      Download Dictionary (379.6 KiB)  | 
        |
| Russian | Русский |      
    Download Dictionary
    (506.5 KiB)
           
    Download Dictionary
    (757.2 KiB)
            | 
             Download Language Pack (586.0 KiB)  | 
      
| Sanskrit | संस्कृत |      Download Dictionary (15.3 KiB)  | 
        |
| Sardinian | Sardu (sc-it) |      Download Dictionary (211.2 KiB)  | 
        |
| Serbian | Српски |      Download Dictionary (1.0 MiB) Download Dictionary (1.1 MiB)  | 
             Download Language Pack (482.8 KiB)  | 
      
| Sinhala | සිංහල |      Download Language Pack (635.8 KiB)  | 
      |
| Siswati | siSwati |      Download Dictionary (107.2 KiB)  | 
        |
| Slovak | slovenčina (sk-sk) |      Download Dictionary (666.7 KiB)  | 
        |
| Slovak | slovenčina (sk-sk-ascii) |      Download Dictionary (605.7 KiB)  | 
        |
| Slovak | slovenčina |      Download Language Pack (513.8 KiB)  | 
      |
| Slovenian | Slovenščina |      Download Dictionary (1.1 MiB)  | 
             Download Language Pack (479.0 KiB)  | 
      
| Songhai | Soŋay |      Download Dictionary (41.6 KiB)  | 
        |
| Southern Sotho | Sesotho |      Download Dictionary (49.7 KiB)  | 
        |
| Spanish | Español (es-ve) |      
    Download Dictionary
    (340.4 KiB)
            | 
        |
| Spanish (Argentina) | Español (de Argentina) |      Download Dictionary (230.0 KiB)  | 
             Download Language Pack (489.5 KiB)  | 
      
| Spanish (Chile) | Español (de Chile) |      Download Dictionary (250.6 KiB)  | 
        |
| Spanish (Mexico) | Español (de México) |      Download Dictionary (195.6 KiB) Download Dictionary (260.0 KiB)  | 
        |
| Spanish (Spain) | Español (de España) |      Download Dictionary (230.5 KiB)  | 
             Download Language Pack (491.6 KiB)  | 
      
| Spellchecker Ladin (Gherdëina) (lld) |      Download Dictionary (393.5 KiB)  | 
        ||
| Spellchecker Ladin (Val Badia) (lld-valbadia) |      Download Dictionary (383.4 KiB)  | 
        ||
| Swahili | Kiswahili (sw-tz) |      Download Dictionary (222.6 KiB)  | 
        |
| Swedish | Svenska |      Download Dictionary (1.4 MiB)  | 
             Download Language Pack (478.9 KiB)  | 
      
| Tamil | தமிழ் |      Download Dictionary (282.7 KiB)  | 
        |
| Tamil (India) | தமிழ் (இந்தியா) |      Download Dictionary (352.1 KiB)  | 
        |
| Telugu | తెలుగు |      Download Dictionary (536.6 KiB)  | 
        |
| Thai | ไทย |      Download Language Pack (554.7 KiB)  | 
      |
| Tsonga | Xitsonga |      Download Dictionary (125.6 KiB)  | 
        |
| Tswana | Setswana |      Download Dictionary (178.4 KiB)  | 
        |
| Turkish | Türkçe |      Download Dictionary (4.3 MiB)  | 
             Download Language Pack (489.5 KiB)  | 
      
| Turkmen spell checker dictionary (tk) |      Download Dictionary (697.4 KiB)  | 
        ||
| Ukrainian | Українська |      Download Dictionary (1.4 MiB)  | 
             Download Language Pack (566.9 KiB)  | 
      
| Upper Sorbian | Hornjoserbsce |      Download Dictionary (167.1 KiB)  | 
             Download Language Pack (509.0 KiB)  | 
      
| Urdu | اُردو |      Download Dictionary (321.4 KiB)  | 
        |
| Uzbek | Oʻzbek tili |      Download Dictionary (238.1 KiB)  | 
             Download Language Pack (346.0 KiB)  | 
      
| Venda | Tshivenḓa |      Download Dictionary (72.6 KiB)  | 
        |
| Venetan (vec) |      Download Dictionary (332.9 KiB)  | 
        ||
| Vietnamese | Tiếng Việt |      Download Dictionary (46.8 KiB)  | 
             Download Language Pack (512.4 KiB)  | 
      
| Welsh | Cymraeg |      Download Dictionary (674.9 KiB)  | 
             Download Language Pack (482.5 KiB)  | 
      
| Xhosa | isiXhosa |      Download Dictionary (192.5 KiB)  | 
        |
| Yiddish spell checker (YIVO) (yi) |      Download Dictionary (300.8 KiB)  | 
        ||
| Zulu | isiZulu |      Download Dictionary (383.3 KiB)  | 
        |
To create your own collections, you must have a Mozilla Add-ons account.