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Proofreading Software

Grammar Checker

Free online grammar, spelling and punctuation checker for English text

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Grammar Checker cover

About Grammar Checker

Grammar Checker, found at grammarchecker.io, is a web tool that scans pasted text for grammar, spelling and punctuation errors. It explains each problem and suggests a correction.

What Grammar Checker offers

Rule-based checking — applies more than 3,300 grammar rules to find mistakes in sentences and articles.
Explained suggestions — every error comes with an explanation and alternative wording.
Sentence structure help — offers corrections for common contextual and sentence-structure errors.
Grammar quizzes — quiz sets are provided to help users learn and avoid repeat mistakes.

Who it works with

The site addresses content writers, bloggers, editors, SEO writers and students, including people for whom English is a second language.

Key facts

Cost: Free to use
English varieties: US, UK, CA and AU
Method: Uses AI and natural language processing

Profile written by TrustList from the business's own published information, Oct 2026.

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Categories & features

Rankings

As of 2026-10-05. Organic ranks only; sponsored placements are never ranks.

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