The World’s Best Online Proofreader

Grammarly’s online proofreader automatically detects grammar, spelling, punctuation, word choice and style mistakes in your writing.

Instantly find and correct over 400 types
of grammatical mistakes.
Detect plagiarism from 16 billion web pages and ProQuest's databases.
Proofread your text
Please drag & drop a text file or copy & paste at  least a paragraph of text in the area above to start the check or use sample text
Improve word choice
with context-optimized vocabulary suggestions.
Compatible with
Word™ & Outlook®.
Learn more

Proofread Your Writing Online With Grammarly

Proofread For 400+ Points of Grammar

Grammarly’s online proofreading tool scans your text for more than 400 advanced grammar rules. Grammarly proofreads for subject-verb agreement, article use, modifier placement, and more! Our online proofreader is fast, accurate, and accessible anywhere.

Proofread Your Word Usage

Proofread for word repetition and enhance your vocabulary with context-optimized synonyms. Our algorithms take into account the frequency and context of your word usage so we can suggest the best alternative word that will help you communicate more clearly.

Contextual Proofreading For Spelling

Even the most eagle-eyed proofreader sometimes misses a mistake, especially misspelled words or commonly confused word pairs such as lose/loose and affect/effect, Grammarly’s automated proofreader spots words that are spelled correctly but used in the wrong context.
Grammar Checker Review - Rhonda
New York, USA
Didn’t expect much from an automated proofreader, but it’s good. Recommend!