Grammar Checker
Rule-based checker for common English mistakes: repeated words, homophones, capitalization and more.
Open the Grammar Checker tool to get started. Everything is processed locally in your browser — no data ever leaves your device.
Features
- Rule-based detection of common English mistakes
- Repeated words, double spaces, missing capitalization and a/an misuse
- Homophone checks: there/their, your/you're, its/it's, to/too/two, then/than, affect/effect, loose/lose and more
- Dictionary of frequent misspellings (definitely, receive, separate, ...)
- US/UK spelling variant flags as style suggestions
- Severity tags (Error / Style / Suggestion) with suggested fixes
- One-click "Apply All Fixes" and copy report to clipboard
- 100% client-side — lightweight linter, not an AI grammar engine
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