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⚡ Rule-Based CheckInstant
Pattern-matching rules for common spelling, grammar, punctuation, and style errors. Runs instantly in your browser — no download needed.
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Effective: Rule-based — no expiration
Last updated: 2 weeks ago
Update frequency: Manual review
Sources: Common English Errors — rule base
This grammar checker uses 200+ predefined rules. It does not use AI or NLP models. It may miss context-dependent errors or produce false positives. Not a substitute for professional proofreading.