Free AI Grammar Checker

Paste any text and instantly catch the most common writing mistakes — confused words, repeated words, double spaces, punctuation slips and more. Every finding comes with a clear fix. 100% client-side: your words never leave your device.

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How does this AI grammar checker work?

Rule-based engine: A curated set of the most frequent real-world errors runs against your text — the ones editors catch daily, not obscure edge cases.

Confused words: It flags classic mix-ups like "your/you're", "there/their/they're", "its/it's", "then/than" and "affect/effect", with context-aware suggestions.

Repetition & spacing: Repeated words and double spaces are found with regex precision, along with common punctuation problems such as double periods and spaces before punctuation.

Privacy first: Everything runs locally in your browser. Your text is never sent to any server.

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