Free Grammar Checker — Fix Grammar, Spelling & Punctuation Online

Catch grammar, spelling, and punctuation errors instantly with our free Grammar Checker. Paste any text and get color-coded highlights for different error types — grammar mistakes in red, spelling errors in blue, and punctuation issues in yellow. Each error includes a suggested fix you can apply with one click. Powered by a comprehensive client-side rule engine covering subject-verb agreement, tense consistency, common misspellings, comma splices, run-on sentences, and more. Perfect for students, writers, bloggers, and professionals who want polished, error-free writing.