Instantly Enhance Your Writing

LanguageTool’s multilingual grammar, style, and spell checker is used by millions of people around the world

Trusted by our partners and customers

  • BMW Group
  • Amazon
  • RingCentral
  • European Union
  • Spiegel Magazine
  • Fraunhofer Institut
  • Heise
  • Bertelsmann Stiftung
  • Schweizer Radio und Fernsehen (SRF)
  • JetBrains
  • IP Australia
  • Wirtschaftsuniversität Wien

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  • Distraction-free writing experience
  • Personal dictionary
  • Quality scoring for your texts
  • Texts are securely stored
  • Access even more suggestions for advanced style and typography with the “Picky Mode”
  • Choose between dark and light appearance
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Our browser add-on works anywhere on the web

Receive tips on how to improve your text (including punctuation advice etc.) while typing an e-mail, a blog post or just a simple tweet. Whatever language you're using, LanguageTool will automatically detect it and provide suggestions. To respect your privacy, no text is stored by the browser add-on.

Add to Firefox It’s free
1,250+ Firefox add-on reviews

Top-rated grammar checker for Firefox with over 1 million users

Integrates with your favorite office program

Get the best out of your docs and deliver error-free results. No matter whether you're working on a dissertation, an essay, or a book, or you just want to note down something.

OpenOffice & LibreOffice Add-on*

* Requires Java 8. Currently not available for the Premium version. Problems installing it? Look here for help: Troubleshooting

Unleash the professional writer in you with LanguageTool Premium

Go well beyond grammar and spell checking, and impress with clear, precise and stylistically correct writing.

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