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Privatool

Free Grammar Checker Online — AI-Powered

Paste your text and get instant corrections for grammar, spelling, punctuation, and style. Each correction includes a clear explanation. No signup required.

How to Use the Grammar Checker

  1. Choose a mode — Quick for spelling and grammar, Deep for comprehensive writing quality analysis.
  2. Paste your text — type or paste up to 5,000 characters into the text area.
  3. Click "Check Grammar" — or press Cmd/Ctrl+Enter to run the analysis.
  4. Review corrections — hover over green highlights to see what changed and why.
  5. Copy corrected text — use the Copy button to get the fixed version with one click.

Types of Errors Detected

Spelling

Misspelled words, typos, and incorrect word forms.

Grammar

Subject-verb agreement, wrong tense, missing articles.

Punctuation

Missing commas, incorrect apostrophes, run-on sentences.

Style

Passive voice, wordiness, and clarity issues (Deep mode).

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