LanguageTool

LanguageTool is an AI-based grammar checker and writing assistant that helps you improve your text as you write. Paste content into the editor or start typing to find grammatical errors, spelling mistakes, and punctuation issues, with suggestions to help you keep the right tone.

Beyond basic corrections, LanguageTool supports style improvements such as detecting overused phrases, foreign terms, redundant wording, and improper word choice. It can also help with casing (capitalization and lowercase) so names, months, places, and national identities look correct. Many suggestions appear directly while you type, with interactive cards that show what to change.

LanguageTool is designed for multilingual writing. It checks more than 30 languages and dialects, including English, Spanish, German, French, Dutch, and Portuguese. If you want to rethink phrasing, it also includes an AI-based paraphrasing tool that can rephrase sentences to be more formal, fluent, simple, or concise.

You can use LanguageTool in a browser editor and through add-ons and plugins for common platforms. Options include browser add-ons (to get suggestions while writing emails, blogs, or posts), Office integrations such as Google Docs and Microsoft Word, plus dedicated apps for macOS and Windows. A free version is available, and Premium adds more complete detection (with unlimited paraphrasing); Premium for Business is also offered, including a limited-time discount.

What does LanguageTool check in my writing?

LanguageTool checks grammar, spelling, and punctuation, and can also flag style and word-choice issues. It’s meant to help you produce clearer, more polished text.

Is LanguageTool only for spelling, or does it go beyond that?

It goes beyond spelling. The tool provides in-depth feedback on grammar and punctuation, plus style-related recommendations.

How does LanguageTool display corrections while I’m typing?

Suggestions and error highlights appear directly as you type, along with suggestion cards for what to change. You can also double-click words to view alternatives like synonyms.

Which languages does LanguageTool support?

LanguageTool supports more than 30 languages and dialects, including English, Spanish, German, French, Dutch, and Portuguese. In the English version, you can choose between different standard varieties.

Can LanguageTool paraphrase my sentences?

Yes. The AI-based Paraphrasing Tool can rewrite sentences to be more formal, fluent, simple, or concise.

Where can I use LanguageTool—just in the editor?

You can use it in the web editor and via browser add-ons, Office plugins (like Google Docs and Microsoft Word), and apps for macOS and Windows. This lets you get writing assistance in many everyday tools.