Spelling checks
Checks spelling mistakes and underlines errors so you can correct names, words, and phrases as you write.
Overview
LanguageTool is an AI-based grammar checker and writing assistant that checks grammar, punctuation, spelling, and style across more than 30 languages. It works as a browser add-on, online editor, and office-writing companion, so users can review text while drafting in the tools they already use.
The product is built for individual writers and teams that want error detection, rewriting help, and optional style controls in one workflow. The source also shows support for longer texts in Premium, plus team features such as shared style guides and dictionaries for organizations.
Features
Grammar correction
Finds grammar issues such as subject-verb agreement, wrong verb forms, word order, and agreement errors.
Punctuation guidance
Flags punctuation problems, including missing commas and incorrect apostrophes, and helps with more complex sentence structures.
Casing correction
Detects casing mistakes and suggests proper capitalization for names, months, places, and national identities.
Style suggestions
Offers style suggestions for overused phrases, redundant wording, foreign terms, and word choice, with a premium Picky Mode for more advanced suggestions.
AI paraphrasing
Paraphrases sentences in tones like formal, concise, fluent, or simple, and supports longer-form rewriting in Premium.
Use Cases
Web writing and editing
Draft and revise emails, blog posts, and other web text directly in the browser while LanguageTool suggests corrections as you type.
Long-form proofreading
Check longer documents such as essays, dissertations, books, and letters, especially when you want additional style and punctuation corrections from Premium.
Paraphrasing and tone adjustment
Rewrite sentences into a more formal, concise, fluent, or simple tone when you need to refine wording without starting over.
Team writing consistency
Use the shared style guide and team dictionary to keep terminology and voice consistent across multiple writers.
Office and desktop workflows
Work inside supported office and desktop apps such as Word, LibreOffice, and other desktop environments where spelling and grammar checks are useful.
Pros and Cons
Pros
- Covers grammar, punctuation, spelling, casing, and style in one tool.
- Supports more than 30 languages and dialects, including major European languages.
- Works in multiple environments, including browsers, an editor, Word, and LibreOffice.
- Includes a paraphrasing tool with several tone options.
- Offers team-oriented controls such as shared style guides and dictionaries.
Cons
- The free version is limited to spelling, simple punctuation, and some style mistakes; full checking requires Premium.
- Some advanced features such as longer-text support, unlimited paraphrasing, and more corrections are tied to Premium.
- The source does not show full pricing details on the page text provided, so plan costs are not included here.
FAQ
Is LanguageTool free?
Yes. LanguageTool offers a free version that checks spelling, simple punctuation, and some style mistakes. Premium adds more checks and additional features for proofreading.
What platforms does LanguageTool work on?
LanguageTool can be used in common browsers through add-ons, and the source also mentions dedicated experiences for Word, LibreOffice, Windows, macOS, and an online editor.
Which languages can it check?
LanguageTool supports more than 30 languages and dialects. The source specifically highlights English, German, Portuguese, Spanish, French, and Dutch.
Does LanguageTool include paraphrasing?
The paraphrasing feature rewrites sentences into different tones such as formal, concise, fluent, or simple. Premium also mentions unlimited sentence paraphrasing.
Can organizations use LanguageTool?
Yes. Team accounts are available, and the pricing page describes shared team features such as a team style guide and team dictionary.
Quick Facts
- Category
- AI grammar checker
- Primary use
- Proofreading and rewriting text
- Languages
- 30+ languages and dialects
- Platforms
- Web, browser add-ons, Word, LibreOffice, Windows, macOS
- Team support
- Yes, team accounts are available
- Domain
- languagetool.org
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