LanguageTool
LanguageTool is a free online proofreading service that helps you check your text for grammar and spelling mistakes in over 30 languages. I...
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What is LanguageTool?
LanguageTool is an AI-based grammar, spelling, punctuation, and style checker that works across many languages and dialects. It checks text as you type or paste it into the editor, and it also offers browser add-ons, desktop apps, and office integrations so you can proofread in many places where you write.
The tool is built for people who want clearer, more polished writing, including students, professionals, editors, teams, and multilingual users. It is especially useful for catching issues a basic spell checker may miss, such as grammar, comma usage, casing, word choice, redundant phrasing, and style problems.
LanguageTool also includes a paraphrasing tool that can rewrite sentences to be more formal, fluent, simple, or concise. Its editor adds helpful extras such as a personal dictionary, statistics, dark and light appearance, and a distraction-free writing experience.
It is designed for broad compatibility, with support for major browsers and integrations with Google Docs, Microsoft Word, LibreOffice, Windows, and macOS. The website also emphasizes privacy for the browser add-on, stating that no text is stored there, and highlights trust from more than 2,000 organizations.
LanguageTool pricing
Pricing model: Freemium
LanguageTool offers a free version and paid Premium options. The free version corrects spelling plus simple punctuation and some style mistakes, while Premium unlocks more thorough error detection, more suggestions, and advanced writing features. The website also notes team accounts for companies, and the public API documentation shows usage limits of 20 requests per minute, 75,000 characters per minute, and 20,000 characters per request for the free API, versus 80 requests per minute, 300,000 characters per minute, and 60,000 characters per request for Premium API use.
LanguageTool pros
- Checks grammar, spelling, punctuation, and style
- Supports more than 30 languages and dialects
- Automatically detects the language you are typing in
- Catches errors beyond simple spell checking
- Flags comma and other punctuation issues
- Detects casing mistakes
- Suggests better word choice and style improvements
- Offers a paraphrasing tool powered by AI
- Can rewrite text to be formal, fluent, simple, or concise
- Works in major browsers with an add-on
- Integrates with Google Docs
- Integrates with Microsoft Word
- Supports LibreOffice
- Has desktop apps for Windows and macOS
- Includes a personal dictionary
- Shows writing statistics and progress
- Offers a distraction-free editor
- Provides dark and light appearance options
- Browser add-on does not store text
- Useful for academic, business, and everyday writing
LanguageTool cons
- Free version only covers basic corrections
- Premium is needed for more complete error detection
- Free usage is limited by text length
- Browser/API usage is rate-limited
- Some advanced punctuation and style help is paywalled
- Paraphrasing is an advanced feature rather than core free functionality
- Not every app or site will have a native integration
- Language coverage is broad, but quality can vary by language
- Large documents may require splitting or premium limits
- API access has request and character caps
Frequently asked questions about LanguageTool
What does LanguageTool check?
LanguageTool checks grammar, spelling, punctuation, casing, and style. It also suggests better word choices, points out redundant phrasing, and helps improve overall readability. The tool is meant to catch mistakes that basic spell checkers often miss.
How many languages does it support?
LanguageTool supports more than 30 languages and dialects on the website, with major support for English, German, Portuguese, Spanish, French, and Dutch. It also supports multiple English variants such as US, UK, Canada, Australia, New Zealand, and South Africa.
Is LanguageTool free?
Yes, LanguageTool has a free version. The free plan corrects spelling plus simple punctuation and some style mistakes, while Premium shows more errors and provides stronger proofreading support.
What does Premium add?
Premium expands error detection and gives access to more suggestions for advanced punctuation, style, and typography. It also includes features such as the paraphrasing tool and broader proofreading support for longer or more demanding texts.
Does LanguageTool work in browsers?
Yes, LanguageTool offers browser add-ons for major browsers, including Chrome, Firefox, Edge, and Safari. The add-on works while you type on websites such as email, blog editors, and social platforms.
Does LanguageTool integrate with office apps?
Yes, it integrates with Google Docs, Microsoft Word, and LibreOffice. The website also mentions desktop support for Windows and macOS so you can proofread inside familiar writing apps.
What is the paraphrasing tool?
LanguageTool's paraphrasing tool uses AI to rephrase sentences. The website says it can make text more formal, fluent, simple, or concise, which can help when you want a sentence to sound clearer or fit a different tone.
Does LanguageTool store my text?
The website says the browser add-on does not store your text. It also describes the editor as securely storing texts, which suggests the service is designed with privacy in mind while still supporting saved work in the editor.
Is LanguageTool useful for long documents?
Yes, it can be used for longer writing such as dissertations, essays, books, and reports. However, the free and Premium API plans have character limits, so very large text may need to be split or handled under Premium limits.
Who uses LanguageTool?
LanguageTool is aimed at anyone who wants clearer writing, including students, professionals, editors, and teams. The website highlights trust from more than 2,000 organizations, which shows it is used in both personal and professional settings.