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<!DOCTYPE html> <html lang="en-US" dir="ltr"><head><title data-react-helmet="true">Grammar and Spell Checker - LanguageTool – Get this Extension for 🦊 Firefox (en-US)</title><meta charSet="utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link href="/static-frontend/Inter-roman-subset-en_de_fr_ru_es_pt_pl_it.var.2ce5ad921c3602b1e5370b3c86033681.woff2" crossorigin="anonymous" rel="preload" as="font" type="font/woff2"/><link href="/static-frontend/amo-14a6d2cafa602d18eac1.css" integrity="sha512-H/D5bZgithMjrIdaQn7+FRaiI/3BVfz2U0e5BzoSay84Be8FhUvLqsrrsW9DXHNN+bt4NoEmtwqPD2fHF1GUXw==" crossorigin="anonymous" rel="stylesheet" type="text/css"/><meta data-react-helmet="true" name="description" content="Download Grammar and Spell Checker - LanguageTool for Firefox. With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word."/><meta data-react-helmet="true" name="date" content="2016-06-10T13:29:55Z"/><meta data-react-helmet="true" name="last-modified" content="2024-08-23T15:57:21Z"/><meta data-react-helmet="true" property="og:type" content="website"/><meta data-react-helmet="true" property="og:url" content="https://addons.mozilla.org/en-US/firefox/addon/languagetool/"/><meta data-react-helmet="true" property="og:title" content="Grammar and Spell Checker - LanguageTool – Get this Extension for 🦊 Firefox (en-US)"/><meta data-react-helmet="true" property="og:locale" content="en-US"/><meta data-react-helmet="true" property="og:image" content="https://addons.mozilla.org/user-media/previews/full/283/283303.png?modified=1685690299"/><meta data-react-helmet="true" property="og:description" content="Download Grammar and Spell Checker - LanguageTool for Firefox. With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word."/><meta data-react-helmet="true" name="twitter:site" content="@mozamo"/><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"/><link rel="shortcut icon" href="/favicon.ico?v=3"/><link data-react-helmet="true" title="Firefox Add-ons" rel="search" type="application/opensearchdescription+xml" href="/en-US/firefox/opensearch.xml"/><link data-react-helmet="true" rel="canonical" href="https://addons.mozilla.org/en-US/firefox/addon/languagetool/"/><script data-react-helmet="true" type="application/ld+json">{"@context":"http:\u002F\u002Fschema.org","@type":"WebApplication","name":"Grammar and Spell Checker - LanguageTool","url":"https:\u002F\u002Faddons.mozilla.org\u002Fen-US\u002Ffirefox\u002Faddon\u002Flanguagetool\u002F","image":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Ffull\u002F283\u002F283303.png?modified=1685690299","applicationCategory":"http:\u002F\u002Fschema.org\u002FOtherApplication","operatingSystem":"Firefox","description":"With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there\u002Ftheir, a\u002Fan, or repeating a word.","offers":{"@type":"Offer","availability":"http:\u002F\u002Fschema.org\u002FInStock","price":0,"priceCurrency":"USD"},"version":"8.11.8","aggregateRating":{"@type":"AggregateRating","ratingCount":4200,"ratingValue":4.705}}</script></head><body><div id="react-view"><div class="Page-amo"><header class="Header"><div class="Header-wrapper"><div class="Header-content"><a class="Header-title" href="/en-US/firefox/"><span class="visually-hidden">Firefox Browser Add-ons</span></a></div><ul class="SectionLinks Header-SectionLinks"><li><a class="SectionLinks-link SectionLinks-link-extension SectionLinks-link--active" href="/en-US/firefox/extensions/">Extensions</a></li><li><a class="SectionLinks-link SectionLinks-link-theme" href="/en-US/firefox/themes/">Themes</a></li><li><div class="DropdownMenu SectionLinks-link SectionLinks-dropdown"><button class="DropdownMenu-button" title="More…" type="button" aria-haspopup="true"><span class="DropdownMenu-button-text">More…</span><span class="Icon Icon-inverted-caret"></span></button><ul class="DropdownMenu-items" aria-hidden="true" aria-label="submenu"><li class="DropdownMenuItem DropdownMenuItem-section SectionLinks-subheader">for Firefox</li><li class="DropdownMenuItem DropdownMenuItem-link"><a class="SectionLinks-dropdownlink" href="/en-US/firefox/language-tools/">Dictionaries & Language Packs</a></li><li class="DropdownMenuItem DropdownMenuItem-section SectionLinks-subheader">Other Browser Sites</li><li class="DropdownMenuItem DropdownMenuItem-link"><a class="SectionLinks-clientApp-android" data-clientapp="android" href="/en-US/android/">Add-ons for Android</a></li></ul></div></li></ul><div class="Header-user-and-external-links"><a class="Button Button--none Header-authenticate-button Header-button Button--micro" href="#login">Log in</a></div><form action="/en-US/firefox/search/" class="SearchForm Header-search-form Header-search-form--desktop" method="GET" data-no-csrf="true" role="search"><div class="AutoSearchInput"><label class="AutoSearchInput-label visually-hidden" for="AutoSearchInput-q">Search</label><div class="AutoSearchInput-search-box"><span class="Icon Icon-magnifying-glass AutoSearchInput-icon-magnifying-glass"></span><div role="combobox" aria-haspopup="listbox" aria-owns="react-autowhatever-1" aria-expanded="false"><input type="search" autoComplete="off" aria-autocomplete="list" aria-controls="react-autowhatever-1" class="AutoSearchInput-query" id="AutoSearchInput-q" maxLength="100" minLength="2" name="q" placeholder="Find add-ons" value=""/><div id="react-autowhatever-1" role="listbox"></div></div><button class="AutoSearchInput-submit-button" type="submit"><span class="visually-hidden">Search</span><span class="Icon Icon-arrow"></span></button></div></div></form></div></header><div class="Page-content"><div class="Page Page-not-homepage"><div class="AppBanner"></div><div class="Addon Addon-extension" data-site-identifier="708770"><div class="Addon-header-wrapper"><section class="Card Addon-header-info-card Card--photon Card--no-header Card--no-footer"><div class="Card-contents"><header class="Addon-header"><div class="Addon-icon"><div class="Addon-icon-wrapper"><img alt="Preview of Grammar and Spell Checker - LanguageTool" class="Addon-icon-image" src="https://addons.mozilla.org/user-media/addon_icons/708/708770-64.png?modified=4f881970"/></div></div><h1 class="AddonTitle">Grammar and Spell Checker - LanguageTool<span class="AddonTitle-author"> <!-- -->by<!-- --> <a href="/en-US/firefox/user/14508210/">LanguageTooler GmbH</a></span></h1><div class="AddonBadges"><div class="PromotedBadge PromotedBadge--recommended PromotedBadge-large"><a class="PromotedBadge-link PromotedBadge-link--recommended" href="https://support.mozilla.org/kb/add-on-badges?utm_content=promoted-addon-badge&utm_medium=referral&utm_source=addons.mozilla.org" rel="noopener noreferrer" target="_blank" title="Firefox only recommends add-ons that meet our standards for security and performance."><span class="Icon Icon-inline-content IconPromotedBadge IconPromotedBadge-large"><svg class="IconPromotedBadge-svg" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><circle class="IconPromotedBadge-circle-bgColor--recommended" cx="50%" cy="50%" r="50%"></circle><g fill-rule="nonzero"><path class="IconPromotedBadge-iconPath IconPromotedBadge-iconPath--recommended" d="M15.449999809265137,3.999999523162842 H4.550000190734863 C4.25,3.999999523162842 4,4.219999313354492 4,4.499999523162842 V6.999999523162842 c0,1.100000023841858 0.9800000190734863,2 2.180000066757202,2 h0.05000000074505806 a3.6700000762939453,3.6700000762939453 0 0 0 3.2200000286102295,2.9600000381469727 V13.499999523162842 h1.100000023841858 V11.959999561309814 A3.6700000762939453,3.6700000762939453 0 0 0 13.770000457763672,8.999999523162842 h0.05000000074505806 C15.020000457763672,8.999999523162842 16,8.099998950958252 16,6.999999523162842 V4.499999523162842 c0,-0.2800000011920929 -0.23999999463558197,-0.5 -0.550000011920929,-0.5 zM5.099999904632568,6.999999523162842 V4.999999523162842 h1.100000023841858 v3 c-0.6100000143051147,0 -1.100000023841858,-0.44999998807907104 -1.100000023841858,-1 zm9.819999694824219,0 c0,0.550000011920929 -0.49000000953674316,1 -1.100000023841858,1 V4.999999523162842 h1.100000023841858 v2 zM11.100000381469727,13.999999523162842 H8.899999618530273 c-2.7200000286102295,0 -2.7200000286102295,2 -2.7200000286102295,2 h7.639999866485596 s0,-2 -2.7300000190734863,-2 z"></path></g></svg></span><span class="PromotedBadge-label PromotedBadge-label--recommended">Recommended</span></a></div></div><div class="Addon-summary-and-install-button-wrapper"><p class="Addon-summary">With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.</p><div class="InstallButtonWrapper"><div class="GetFirefoxButton"><div class="GetFirefoxButton-callout"><div class="GetFirefoxButton-callout-icon"></div><div class="GetFirefoxButton-callout-text">You'll need Firefox to use this extension</div></div><a class="Button Button--action GetFirefoxButton-button Button--puffy" href="https://www.mozilla.org/firefox/download/thanks/?s=direct&utm_campaign=amo-fx-cta-708770&utm_content=rta%3AbGFuZ3VhZ2V0b29sLXdlYmV4dGVuc2lvbkBsYW5ndWFnZXRvb2wub3Jn&utm_medium=referral&utm_source=addons.mozilla.org">Download Firefox and get the extension</a></div><div class="InstallButtonWrapper-download"><a class="InstallButtonWrapper-download-link" href="https://addons.mozilla.org/firefox/downloads/file/4341696/languagetool-8.11.8.xpi">Download file</a></div></div></div><h2 class="visually-hidden">Extension Metadata</h2></header></div></section><section class="Card Addon-header-meta-and-ratings Card--photon Card--no-header Card--no-footer"><div class="Card-contents"><div class="AddonMeta"><h3 class="visually-hidden">Used by</h3><div class="MetadataCard AddonMeta-overallRating"><dl class="MetadataCard-list"><dd class="MetadataCard-content">391,529</dd><dt class="MetadataCard-title">Users</dt></dl><dl class="MetadataCard-list"><dd class="MetadataCard-content"><a class="AddonMeta-reviews-content-link" href="/en-US/firefox/addon/languagetool/reviews/?utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org">4,200</a></dd><dt class="MetadataCard-title"><a class="AddonMeta-reviews-title-link" href="/en-US/firefox/addon/languagetool/reviews/?utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org">Reviews</a></dt></dl><dl class="MetadataCard-list"><dd class="MetadataCard-content"><div class="AddonMeta-rating-content"><div class="Rating Rating--small Rating--yellowStars" title="Rated 4.7 out of 5"><div class="Rating-star Rating-rating-1 Rating-selected-star" title="Rated 4.7 out of 5"></div><div class="Rating-star Rating-rating-2 Rating-selected-star" title="Rated 4.7 out of 5"></div><div class="Rating-star Rating-rating-3 Rating-selected-star" title="Rated 4.7 out of 5"></div><div class="Rating-star Rating-rating-4 Rating-selected-star" title="Rated 4.7 out of 5"></div><div class="Rating-star Rating-rating-5 Rating-half-star" title="Rated 4.7 out of 5"></div><span class="visually-hidden">Rated 4.7 out of 5</span></div></div></dd><dt class="MetadataCard-title"><div class="AddonMeta-rating-title">4.7 Stars</div></dt></dl></div><div class="RatingsByStar"><div class="RatingsByStar-graph"><a class="RatingsByStar-row" rel="nofollow" title="Read all 3,488 five-star reviews" href="/en-US/firefox/addon/languagetool/reviews/?score=5&utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org"><div class="RatingsByStar-star">5<span class="Icon Icon-star-yellow"></span></div><div class="RatingsByStar-barContainer"><div class="RatingsByStar-bar RatingsByStar-barFrame"><div class="RatingsByStar-bar RatingsByStar-barValue RatingsByStar-barValue--83pct RatingsByStar-partialBar"></div></div></div><div class="RatingsByStar-count">3,488</div></a><a class="RatingsByStar-row" rel="nofollow" title="Read all 462 four-star reviews" href="/en-US/firefox/addon/languagetool/reviews/?score=4&utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org"><div class="RatingsByStar-star">4<span class="Icon Icon-star-yellow"></span></div><div class="RatingsByStar-barContainer"><div class="RatingsByStar-bar RatingsByStar-barFrame"><div class="RatingsByStar-bar RatingsByStar-barValue RatingsByStar-barValue--11pct RatingsByStar-partialBar"></div></div></div><div class="RatingsByStar-count">462</div></a><a class="RatingsByStar-row" rel="nofollow" title="Read all 90 three-star reviews" href="/en-US/firefox/addon/languagetool/reviews/?score=3&utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org"><div class="RatingsByStar-star">3<span class="Icon Icon-star-yellow"></span></div><div class="RatingsByStar-barContainer"><div class="RatingsByStar-bar RatingsByStar-barFrame"><div class="RatingsByStar-bar RatingsByStar-barValue RatingsByStar-barValue--2pct RatingsByStar-partialBar"></div></div></div><div class="RatingsByStar-count">90</div></a><a class="RatingsByStar-row" rel="nofollow" title="Read all 43 two-star reviews" href="/en-US/firefox/addon/languagetool/reviews/?score=2&utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org"><div class="RatingsByStar-star">2<span class="Icon Icon-star-yellow"></span></div><div class="RatingsByStar-barContainer"><div class="RatingsByStar-bar RatingsByStar-barFrame"><div class="RatingsByStar-bar RatingsByStar-barValue RatingsByStar-barValue--1pct RatingsByStar-partialBar"></div></div></div><div class="RatingsByStar-count">43</div></a><a class="RatingsByStar-row" rel="nofollow" title="Read all 117 one-star reviews" href="/en-US/firefox/addon/languagetool/reviews/?score=1&utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org"><div class="RatingsByStar-star">1<span class="Icon Icon-star-yellow"></span></div><div class="RatingsByStar-barContainer"><div class="RatingsByStar-bar RatingsByStar-barFrame"><div class="RatingsByStar-bar RatingsByStar-barValue RatingsByStar-barValue--3pct RatingsByStar-partialBar"></div></div></div><div class="RatingsByStar-count">117</div></a></div></div></div></div></section></div><div class="Addon-details"><div class="Addon-main-content"><section class="Card Addon-screenshots Card--no-footer"><header class="Card-header"><div class="Card-header-text">Screenshots</div></header><div class="Card-contents"><div class="ScreenShots"><div class="ScreenShots-viewport"><div class="ScreenShots-list"><img class="ScreenShots-image" src="https://addons.mozilla.org/user-media/previews/thumbs/283/283303.jpg?modified=1685690299" width="533" height="333"/><img class="ScreenShots-image" src="https://addons.mozilla.org/user-media/previews/thumbs/283/283304.jpg?modified=1685690298" width="533" height="333"/><img class="ScreenShots-image" src="https://addons.mozilla.org/user-media/previews/thumbs/283/283305.jpg?modified=1685690301" width="533" height="333"/><img class="ScreenShots-image" src="https://addons.mozilla.org/user-media/previews/thumbs/283/283306.jpg?modified=1685690296" width="533" height="333"/><img class="ScreenShots-image" src="https://addons.mozilla.org/user-media/previews/thumbs/283/283307.jpg?modified=1685690299" width="533" height="333"/><div class="pswp" tabindex="-1" role="dialog" aria-hidden="true"><div class="pswp__bg"></div><div class="pswp__scroll-wrap"><div class="pswp__container"><div class="pswp__item"></div><div class="pswp__item"></div><div class="pswp__item"></div></div><div class="pswp__ui pswp__ui--hidden"><div class="pswp__top-bar"><div class="pswp__counter"></div><button type="button" class="pswp__button pswp__button--close" title="Close (Esc)"></button><button type="button" class="pswp__button pswp__button--share" title="Share"></button><button type="button" class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button><button type="button" class="pswp__button pswp__button--zoom" title="Zoom in/out"></button><div class="pswp__preloader"><div class="pswp__preloader__icn"><div class="pswp__preloader__cut"><div class="pswp__preloader__donut"></div></div></div></div></div><div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap"><div class="pswp__share-tooltip"></div></div><button type="button" class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)"></button><button type="button" class="pswp__button pswp__button--arrow--right" title="Next (arrow right)"></button><div class="pswp__caption"><div class="pswp__caption__center"></div></div></div></div></div></div></div></div></div></section><section class="Card ShowMoreCard AddonDescription ShowMoreCard--expanded Card--no-footer"><header class="Card-header"><div class="Card-header-text">About this extension</div></header><div class="Card-contents"><div class="ShowMoreCard-contents"><div class="AddonDescription-contents">Check your texts for spelling and grammar problems everywhere on the web<br><br>★ Finds many errors that a simple spell checker cannot detect<br>★ No registration needed<br>★ Supports more than 25 languages (see below)<br>★ Works on almost any website including Gmail, Facebook, Twitter<br><br>This free extension ensures that your writing is error-free via the grammar and style checker LanguageTool. LanguageTool detects many errors that a simple spell checker cannot, such as grammar issues, commonly confused words, and punctuation oversights. Additionally, LanguageTool offers style suggestions to elevate your writing: synonym replacements for overused words, concise rephrasing of wordy sentences, and formal alternatives to commonly used expressions.<br><br>LanguageTool is designed with simplicity in mind, instantly analyzing your text as you type. It is compatible with most platforms, including social networks such as Twitter and LinkedIn, and e-mail services such as Gmail.<br><br>With LanguageTool, our aim is to give users a full-feature grammar checker and proofreader that will enable them to have control and confidence over their content. While LanguageTool is a vital extension for non-native speakers, it also recognizes many mistakes that are frequently made by native speakers. This grammar and spelling correction works across several varieties of commonly spoken languages, and is capable of distinguishing between American and British English. LanguageTool also features a personal dictionary for exceptions or words that you might commonly use, but are not found in a conventional dictionary; it will learn to recognize these words for future grammar checking and proofreading.<br><br>Unlike other services like Grammarly (a.k.a. Grammerly :-), QuillBot, and Ginger, LanguageTool supports more than 25 languages including English, Spanish, French, German, Polish, and Russian (see below for the complete list).<br><br>Your privacy is important to us: By default, this extension will check your text by sending it to <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/2784e8753205334dfb8b51e670a33f6c9d5820821f44f3d062f81eb2fd45f5ef/https%3A//languagetool.org">languagetool.org</a> over a securely encrypted connection. No account is needed to use this extension. We don't store your IP address. See <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/852ac1b86c83973f7fe4ded8cc1cda3caa5bbef3a5f1dd9673e883e963e0878d/https%3A//languagetool.org/privacy/">https://languagetool.org/privacy/</a> for our privacy policy.<br><br>Please send bug reports or questions to <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/7cd2e2000a2455cafbe858770245772bd1ffed5f088d077e8933253eb3031afc/https%3A//forum.languagetool.org">https://forum.languagetool.org</a>.<br><br>List of supported languages: English (Australian, Canadian, GB, New Zealand, South African, US), French, German (Austria, Germany, Swiss), Asturian, Belarusian, Breton, Catalan (also Valencian), Chinese, Danish, Dutch, Esperanto, Galician, Greek, Italian, Japanese, Khmer, Persian, Polish, Portuguese (Brazil, Portugal, Angola, Mozambique), Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tagalog, Tamil, Ukrainian, Arabic</div></div></div></section></div><section class="Card Addon-overall-rating"><header class="Card-header"><div class="Card-header-text">Rate your experience</div></header><div class="Card-contents"><div class="RatingManager"><form action=""><fieldset><legend class="RatingManager-legend">How are you enjoying <b>Grammar and Spell Checker - LanguageTool</b>?</legend><div class="RatingManager-ratingControl"><a class="Button Button--action RatingManager-log-in-to-rate-button Button--micro" href="#login">Log in to rate this extension</a><div class="Rating Rating--large RatingManager-UserRating" title="There are no ratings yet"><div class="Rating-star Rating-rating-1" title="There are no ratings yet"></div><div class="Rating-star Rating-rating-2" title="There are no ratings yet"></div><div class="Rating-star Rating-rating-3" title="There are no ratings yet"></div><div class="Rating-star Rating-rating-4" title="There are no ratings yet"></div><div class="Rating-star Rating-rating-5" title="There are no ratings yet"></div><span class="visually-hidden">There are no ratings yet</span></div></div><div class="Notice Notice-success RatingManagerNotice-savedRating RatingManagerNotice-savedRating-hidden Notice-light"><div class="Notice-icon"></div><div class="Notice-column"><div class="Notice-content"><p class="Notice-text">Star rating saved</p></div></div></div></fieldset></form><div class="ReportAbuseButton"><div class="ReportAbuseButton--preview"><a rel="nofollow" class="Button Button--neutral ReportAbuseButton-show-more Button--puffy" href="/en-US/firefox/feedback/addon/languagetool/">Report this add-on</a></div></div></div></div><footer class="Card-footer Card-footer-link"><div class="Addon-read-reviews-footer"><a class="Addon-all-reviews-link" href="/en-US/firefox/addon/languagetool/reviews/?utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org">Read all 4,200 reviews</a></div></footer></section><section class="Card ShowMoreCard PermissionsCard ShowMoreCard--expanded Card--no-footer"><header class="Card-header"><div class="Card-header-text"><div class="PermissionsCard-header">Permissions<a class="PermissionsCard-learn-more" target="_blank" rel="noopener noreferrer" href="https://support.mozilla.org/kb/permission-request-messages-firefox-extensions">Learn more<span class="Icon Icon-external-dark"></span></a></div></div></header><div class="Card-contents"><div class="ShowMoreCard-contents"><p class="PermissionsCard-subhead--required">This add-on needs to:</p><ul class="PermissionsCard-list--required"><li class="Permission"><span class="Icon Icon-permission-hostPermission"></span><span class="Permission-description">Access your data for all websites</span></li></ul></div></div></section><section class="Card AddonMoreInfo Card--no-footer"><header class="Card-header"><div class="Card-header-text">More information</div></header><div class="Card-contents"><dl class="DefinitionList AddonMoreInfo-dl"><dt class="Definition-dt">Add-on Links</dt><dd class="Definition-dd AddonMoreInfo-links"><ul class="AddonMoreInfo-links-contents-list"><li><a class="AddonMoreInfo-homepage-link" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/2784e8753205334dfb8b51e670a33f6c9d5820821f44f3d062f81eb2fd45f5ef/https%3A//languagetool.org" title="https://languagetool.org" rel="nofollow">Homepage</a></li><li><a class="AddonMoreInfo-support-link" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/7cd2e2000a2455cafbe858770245772bd1ffed5f088d077e8933253eb3031afc/https%3A//forum.languagetool.org" title="https://forum.languagetool.org" rel="nofollow">Support site</a></li></ul></dd><dt class="Definition-dt">Version</dt><dd class="Definition-dd AddonMoreInfo-version">8.11.8</dd><dt class="Definition-dt">Size</dt><dd class="Definition-dd AddonMoreInfo-filesize">11.47 MB</dd><dt class="Definition-dt">Last updated</dt><dd class="Definition-dd AddonMoreInfo-last-updated">3 months ago (Aug 23, 2024)</dd><dt class="Definition-dt">Related Categories</dt><dd class="Definition-dd AddonMoreInfo-related-categories"><ul class="AddonMoreInfo-related-categories-list"><li><a class="AddonMoreInfo-related-category-link" href="/en-US/firefox/extensions/category/language-support/">Language Support</a></li><li><a class="AddonMoreInfo-related-category-link" href="/en-US/firefox/extensions/category/social-communication/">Social & Communication</a></li></ul></dd><dt class="Definition-dt">License</dt><dd class="Definition-dd AddonMoreInfo-license"><span class="AddonMoreInfo-license-name">All Rights Reserved</span></dd><dt class="Definition-dt">Privacy Policy</dt><dd class="Definition-dd AddonMoreInfo-privacy-policy"><a class="AddonMoreInfo-privacy-policy-link" rel="nofollow" href="/en-US/firefox/addon/languagetool/privacy/?utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org">Read the privacy policy for this add-on</a></dd><dt class="Definition-dt">Version History</dt><dd class="Definition-dd AddonMoreInfo-version-history"><ul class="AddonMoreInfo-links-contents-list"><li><a class="AddonMoreInfo-version-history-link" href="/en-US/firefox/addon/languagetool/versions/?utm_content=homepage-collection-featured&utm_medium=referral&utm_source=addons.mozilla.org">See all versions</a></li></ul></dd></dl></div></section><section class="Card AddAddonToCollection Card--no-footer"><header class="Card-header"><div class="Card-header-text">Add to collection</div></header><div class="Card-contents"><select class="Select AddAddonToCollection-select"><option class="AddAddonToCollection-option" value="default">Select a collection…</option><option class="AddAddonToCollection-option" value="create-new-collection">Create new collection</option></select></div></section><div><section class="Card CardList AddonsCard AddonsByAuthorsCard Addon-MoreAddonsCard AddonsCard--horizontal Card--photon Card--no-footer"><header class="Card-header"><div class="Card-header-text">More extensions by LanguageTooler GmbH</div></header><div class="Card-contents"><ul class="AddonsCard-list"><li class="SearchResult"><div class="SearchResult-wrapper"><div class="SearchResult-result"><div class="SearchResult-icon-wrapper"><img class="SearchResult-icon SearchResult-icon--loading" src="/static-frontend/1b2fb62f37f1c1e59208f4993714d166.svg" alt=""/></div><div class="SearchResult-contents"><h2 class="SearchResult-name"><span class="LoadingText LoadingText--delay-1 LoadingText--width-60" role="alert" aria-busy="true"></span></h2><p class="SearchResult-summary"><span class="LoadingText LoadingText--delay-2 LoadingText--width-60" role="alert" aria-busy="true"></span></p><div class="SearchResult-metadata"><div class="SearchResult-rating"><div class="Rating Rating--small" title="There are no ratings yet"><div class="Rating-star Rating-rating-1" title="There are no ratings yet"></div><div class="Rating-star Rating-rating-2" title="There are no ratings yet"></div><div class="Rating-star 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value="ast">Asturianu</option><option value="az">Azərbaycanca</option><option value="bg">Български</option><option value="bn">বাংলা</option><option value="bs">Bosanski</option><option value="ca">Català</option><option value="cak">Maya Kaqchikel</option><option value="cs">Čeština</option><option value="da">Dansk</option><option value="de">Deutsch</option><option value="dsb">Dolnoserbšćina</option><option value="el">Ελληνικά</option><option value="en-CA">English (Canadian)</option><option value="en-GB">English (British)</option><option value="en-US" selected="">English (US)</option><option value="es">Español</option><option value="et">Eesti keel</option><option value="eu">Euskara</option><option value="fa">فارسی</option><option value="fi">suomi</option><option value="fr">Français</option><option value="fur">Furlan</option><option value="fy-NL">Frysk</option><option value="ga-IE">Gaeilge</option><option value="he">עברית</option><option value="hr">Hrvatski</option><option 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value="sk">slovenčina</option><option value="sl">Slovenščina</option><option value="sq">Shqip</option><option value="sv-SE">Svenska</option><option value="te">తెలుగు</option><option value="th">ไทย</option><option value="tr">Türkçe</option><option value="uk">Українська</option><option value="ur">اُردو</option><option value="vi">Tiếng Việt</option><option value="zh-CN">中文 (简体)</option><option value="zh-TW">正體中文 (繁體)</option></select></div></div></div></footer></div></div><script type="application/json" id="redux-store-state">{"abuse":{"byGUID":{},"loading":false},"addons":{"byID":{"708770":{"authors":[{"id":14508210,"name":"LanguageTooler GmbH","url":"https:\u002F\u002Faddons.mozilla.org\u002Fen-US\u002Ffirefox\u002Fuser\u002F14508210\u002F","username":"languagetooler","picture_url":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fuserpics\u002F10\u002F8210\u002F14508210\u002F14508210.png?modified=1545238039"}],"average_daily_users":391529,"categories":["language-support","social-communication"],"contributions_url":"","created":"2016-06-10T13:29:55Z","default_locale":"en-US","description":"Check your texts for spelling and grammar problems everywhere on the web\n\n★ Finds many errors that a simple spell checker cannot detect\n★ No registration needed\n★ Supports more than 25 languages (see below)\n★ Works on almost any website including Gmail, Facebook, Twitter\n\nThis free extension ensures that your writing is error-free via the grammar and style checker LanguageTool. LanguageTool detects many errors that a simple spell checker cannot, such as grammar issues, commonly confused words, and punctuation oversights. Additionally, LanguageTool offers style suggestions to elevate your writing: synonym replacements for overused words, concise rephrasing of wordy sentences, and formal alternatives to commonly used expressions.\n\nLanguageTool is designed with simplicity in mind, instantly analyzing your text as you type. It is compatible with most platforms, including social networks such as Twitter and LinkedIn, and e-mail services such as Gmail.\n\nWith LanguageTool, our aim is to give users a full-feature grammar checker and proofreader that will enable them to have control and confidence over their content. While LanguageTool is a vital extension for non-native speakers, it also recognizes many mistakes that are frequently made by native speakers. This grammar and spelling correction works across several varieties of commonly spoken languages, and is capable of distinguishing between American and British English. LanguageTool also features a personal dictionary for exceptions or words that you might commonly use, but are not found in a conventional dictionary; it will learn to recognize these words for future grammar checking and proofreading.\n\nUnlike other services like Grammarly (a.k.a. Grammerly :-), QuillBot, and Ginger, LanguageTool supports more than 25 languages including English, Spanish, French, German, Polish, and Russian (see below for the complete list).\n\nYour privacy is important to us: By default, this extension will check your text by sending it to \u003Ca href=\"https:\u002F\u002Fprod.outgoing.prod.webservices.mozgcp.net\u002Fv1\u002F2784e8753205334dfb8b51e670a33f6c9d5820821f44f3d062f81eb2fd45f5ef\u002Fhttps%3A\u002F\u002Flanguagetool.org\" rel=\"nofollow\"\u003Elanguagetool.org\u003C\u002Fa\u003E over a securely encrypted connection. No account is needed to use this extension. We don't store your IP address. See \u003Ca href=\"https:\u002F\u002Fprod.outgoing.prod.webservices.mozgcp.net\u002Fv1\u002F852ac1b86c83973f7fe4ded8cc1cda3caa5bbef3a5f1dd9673e883e963e0878d\u002Fhttps%3A\u002F\u002Flanguagetool.org\u002Fprivacy\u002F\" rel=\"nofollow\"\u003Ehttps:\u002F\u002Flanguagetool.org\u002Fprivacy\u002F\u003C\u002Fa\u003E for our privacy policy.\n\nPlease send bug reports or questions to \u003Ca href=\"https:\u002F\u002Fprod.outgoing.prod.webservices.mozgcp.net\u002Fv1\u002F7cd2e2000a2455cafbe858770245772bd1ffed5f088d077e8933253eb3031afc\u002Fhttps%3A\u002F\u002Fforum.languagetool.org\" rel=\"nofollow\"\u003Ehttps:\u002F\u002Fforum.languagetool.org\u003C\u002Fa\u003E.\n\nList of supported languages: English (Australian, Canadian, GB, New Zealand, South African, US), French, German (Austria, Germany, Swiss), Asturian, Belarusian, Breton, Catalan (also Valencian), Chinese, Danish, Dutch, Esperanto, Galician, Greek, Italian, Japanese, Khmer, Persian, Polish, Portuguese (Brazil, Portugal, Angola, Mozambique), Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tagalog, Tamil, Ukrainian, Arabic","developer_comments":null,"edit_url":"https:\u002F\u002Faddons.mozilla.org\u002Fen-US\u002Fdevelopers\u002Faddon\u002Flanguagetool\u002Fedit","guid":"languagetool-webextension@languagetool.org","has_eula":false,"has_privacy_policy":true,"homepage":{"url":"https:\u002F\u002Flanguagetool.org","outgoing":"https:\u002F\u002Fprod.outgoing.prod.webservices.mozgcp.net\u002Fv1\u002F2784e8753205334dfb8b51e670a33f6c9d5820821f44f3d062f81eb2fd45f5ef\u002Fhttps%3A\u002F\u002Flanguagetool.org"},"icon_url":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Faddon_icons\u002F708\u002F708770-64.png?modified=4f881970","icons":{"32":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Faddon_icons\u002F708\u002F708770-32.png?modified=4f881970","64":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Faddon_icons\u002F708\u002F708770-64.png?modified=4f881970","128":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Faddon_icons\u002F708\u002F708770-128.png?modified=4f881970"},"id":708770,"is_disabled":false,"is_experimental":false,"last_updated":"2024-08-28T08:18:33Z","name":"Grammar and Spell Checker - LanguageTool","previews":[{"h":800,"src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Ffull\u002F283\u002F283303.png?modified=1685690299","thumbnail_h":333,"thumbnail_src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Fthumbs\u002F283\u002F283303.jpg?modified=1685690299","thumbnail_w":533,"title":null,"w":1280},{"h":800,"src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Ffull\u002F283\u002F283304.png?modified=1685690298","thumbnail_h":333,"thumbnail_src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Fthumbs\u002F283\u002F283304.jpg?modified=1685690298","thumbnail_w":533,"title":null,"w":1280},{"h":800,"src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Ffull\u002F283\u002F283305.png?modified=1685690301","thumbnail_h":333,"thumbnail_src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Fthumbs\u002F283\u002F283305.jpg?modified=1685690301","thumbnail_w":533,"title":null,"w":1280},{"h":800,"src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Ffull\u002F283\u002F283306.png?modified=1685690296","thumbnail_h":333,"thumbnail_src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Fthumbs\u002F283\u002F283306.jpg?modified=1685690296","thumbnail_w":533,"title":null,"w":1280},{"h":800,"src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Ffull\u002F283\u002F283307.png?modified=1685690299","thumbnail_h":333,"thumbnail_src":"https:\u002F\u002Faddons.mozilla.org\u002Fuser-media\u002Fpreviews\u002Fthumbs\u002F283\u002F283307.jpg?modified=1685690299","thumbnail_w":533,"title":null,"w":1280}],"promoted":{"apps":["firefox"],"category":"recommended"},"ratings":{"average":4.705,"bayesian_average":4.703416170618981,"count":4200,"text_count":1352,"grouped_counts":{"1":117,"2":43,"3":90,"4":462,"5":3488}},"requires_payment":false,"review_url":"https:\u002F\u002Faddons.mozilla.org\u002Fen-US\u002Freviewers\u002Freview\u002F708770","slug":"languagetool","status":"public","summary":"With this extension you can check text with the free style and grammar checker LanguageTool. 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