AI Grammar Checker & Paraphraser – LanguageTool icon

AI Grammar Checker & Paraphraser – LanguageTool

by LanguageTooler GmbH · languagetool.org · Workflow & Planning
FeaturedEstablished publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Instantly Enhance Your Texts with LanguageTool’s Grammar Checker and Paraphrasing Tool

Users
2M
0 in 30 days
Rating
3.3 / 5
−1.34 in 30 days
Ratings
12,560
+4 in 30 days
Store rank
#191
#184 among extensions
Version
11.4.0
updated 18 Sep 2026

Users

monthly, 3 years
600K1.8M3MAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 2,000,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
3,0007,78013KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 12,560 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About AI Grammar Checker & Paraphraser – LanguageTool

★ Finds many errors that a simple spell checker cannot detect ★ No registration needed ★ Supports more than 25 languages (see below) ★ Works on almost any website including Gmail, Facebook, Twitter This extension ensures that your writing is error-free. 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. 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. 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. 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). Your privacy is important to us: By default, this extension will check your text by sending it to https://languagetool.org over a securely encrypted connection. No account is needed to use this extension. We don't store your IP address. See https://languagetool.org/privacy/ for our privacy policy. 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

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%−1−1.33
30 days0+0.0%+4−1.34
6 months−1M−33.3%+113−1.35
1 year−1M−33.3%+999−1.48

Chrome Web Store search rankings

Where AI Grammar Checker & Paraphraser – LanguageTool appears when people search the store, with the 30 day change
Search phrasePosition30 days
ai spell checker#10
ai grammar check#10
ai grammar#10
grammar & spelling#10
grammar and spell#10
ai grammar checker#10
ai spelling checker#10
spelling & grammar checker#10
paraphraser#20
grammar check#2+1
grammar checker#2+2
grammar#3+1
spelling checker#3+1
spell checker#40
ai paraphraser#5−2
checker#8+10
spelling#10+2
french#15−1
error#18+8
language#18+7
sheets erweiterung#22+19
tool#25new
ai summary writer#34+2
store#48new
ai#84new
will#94new
extension#97new

Version history

136 versions recorded
11.4.018 Sep 2026
11.2.312 Aug 2026
11.2.17 Aug 2026
11.1.127 Jul 2026
11.1.021 Jul 2026
11.0.030 Apr 2026
10.2.012 Mar 2026
10.1.120 Feb 2026

Details

Category
Workflow & Planning
First seen
16 Jun 2020
Size
15.0 MB
Languages
de, en, nl, ca, es, fr, it, pl
Pricing
Free
Privacy policy
languagetool.org
Support
help.languagetool.org
Extension ID
oldceeleldhonbafppcapldpdifcinji

Permissions and risk

Minimal riskimpact 2, likelihood 0
Permissions
activeTabstoragecontextMenusscriptingalarms

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