AI Grammar Checker & Paraphraser – LanguageTool
Instantly Enhance Your Texts with LanguageTool’s Grammar Checker and Paraphrasing Tool
★ 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 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.
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
Latest reviews
genial
It works very well!!! Loved it.
Very nice. Powerful, accurate and very easy to use. Just wonderful.
Very helpful
Very Useful
I've tried several different extensions for phrasing, grammar, sentence structure, spelling, etc - LanguageTool is by far the best of them all. It opens automatically on Gmail, Facebook, and everywhere else I type - you can go to a pop-out screen to practise a couple of ways you want to format your sentences/paragraphs and it tells you which is the best - AND sounds most like you! I highly recommend this, super easy to install, too.
localhost so my passwords are not sent over the nets
{5-stars with specified reason}
Really helps me look a lot smarter than I really am. Sign up you want regret it.
highly reccomended
its does not help
top
Highly Highly Recommended
This app is one of the best language or grammar checking extension I have used so far. Whenever I download a extension, there are 2 things I look for. First is the smoothness and design or the extension. Next is the most important, how does the extension flow even if I do not use the purchased version. And this extension has done it perfectly. Well done to the devs.
multiple languages supports German reasonably well great from granular to complex corrections
I had the paid version for two-years and used it mainly for email and Twitter. It let too many grammar errors go by, even if the sentence made no sense, so I decided not to renew it. Even for this simple review, I caught two errors that the extension didn't catch.
love it
Couldn't do my work without this extension!
Fantastic!!!
stellar product!
This extension claims to have support for Norwegian, but it lacks the most basic words and is completely useless. It is also unable to auto-detect Norwegian if I have Norwegian and English selected as my preferred languages. Uninstalling immediately.
Super
Amazing extension. Simple, easy and effective. Works in every site and it is such a great tool for typing in different languages.
the best. thank you
Love it. I am learning Spanish by writing short stories or talking my way through the language.
good enough, really good
ta biueno
Excellent! It's very useful.
it is good for school
too good.
Love this, THANK YOU! Here's my review from my experience with Grammarly to sum it up: Grammarly is great if you want to a non-stop BUY PREMIUM pop-up in front of your face every time you make a mistake or even regular sentences in general that it thinks could be better. The free version is so incredibly annoying, unintelligent, and unhelpful, it did the opposite of make me want to pay for an upgrade and felt more like a virus than an extension. I tried the LanguageTool extension instead; INSTANTLY more helpful, less invasive, calmer colors, and no pressure to upgrade. They just provide a decent tool/service for free and offer better features for a price, totally fair, but they don't shove the offer your face more than they provide the tool/service!
super helpful, I use it everyday
very very helpful
far better then grammarly! super happy!
LanguageTool is a great choice for translation and grammar checking, but for writing tools, I recommend TinaMind's Wiseinks.
very very helpful
helpful
LanguageTool is an outstanding writing assistant that goes far beyond basic spellcheck. It not only catches typos and grammar slips, but also offers smart style improvements, tone suggestions, and clarity enhancements that make your writing sharper and more professional. Whether you're crafting emails, reports, or creative content, it adapts to your context with multilingual support and a sleek, distraction-free interface. One of its biggest strengths is its real-time feedback, which is both helpful and non-intrusive. It flags issues clearly, explains them in simple terms, and offers one-click fixes — no digging through clunky menus. Plus, it supports over 20 languages, making it incredibly valuable for international teams and multilingual writers. Compared to tools like Grammarly, LanguageTool stands out for its open-source roots, customizable rules, and privacy-respecting design. It even integrates smoothly into your browser, documents, and email, so your writing stays polished wherever you work. In short: LanguageTool is clean, smart, fast — and a must-have for anyone who takes their writing seriously.
Fantastic grammar tool. I interested in the AI bits for the most part, but the extension itself does everything I want it to. It works seamlessly with just about every website and text box on Chrome. Except for this text box in the Chrome web store, ironically!
Does not work at all.
High CPU usage for about 2 days (up to 30%). Turned it off in Chrome. Firefox is OK.
Winner
legal
excelen, it realy helps me
The July 21st update was more than due. It is excellent again, now.
Excellent. I type to quickly and errors galore, then it sorts them out, Very good indeed malc
I gave it 4 stars because this extension really helps because so some big words are hard for me to spell and I have a really hard time with Grammar what I love about this extension is that it corrects all my mistakes so my writing can be perfect
Worked great till they charged me two months in a row for a quarterly account. The extra charge doesn't show on my account page but the money has been taken from my bank account.
I went to school while hiding from Dinosaur, lol, so spelling was a SOUND IT OUT lesson. This program helps with the ignorance of those lessons.
Fabulous extension! Love it! I would like to have deeper control into what it checks, but this is not bad enough to take a star out of my review.
