Grammar Checker
Paste your text to find common grammar, spelling, and style issues.
Paste your text to find common grammar, spelling, and style issues.
Good writing starts with clean grammar. Our grammar checker scans your text for common mistakes including double spaces, capitalization errors, repeated words, and frequently confused words. Paste your text, click check, and see issues highlighted instantly. This is a rule-based checker that runs entirely in your browser, so your text is never sent anywhere.
The checker looks for several categories of issues. Spelling checks flag commonly confused word pairs like their and there, your and you're, its and it's, affect and effect, and about fifty other common mix-ups. Grammar checks catch missing capitalization after periods, sentences starting with lowercase letters, and missing periods at the end of text. Style checks find double spaces, repeated words like "the the," and other formatting inconsistencies.
Click the Check Grammar button and the tool scans your text against a set of rules. Each issue is highlighted in the text with a color-coded underline: red for potential spelling confusion, yellow for grammar issues, and blue for style suggestions. Click any issue in the list below the text to see the specific suggestion. The counts at the top give you a quick overview of how many issues were found in each category.
This is a basic, rule-based grammar checker. It does not use artificial intelligence or natural language processing, so it cannot understand context the way tools like Grammarly or ProWritingAid can. It will not catch every error and may flag words that are actually used correctly. It is best suited for catching obvious typos and formatting issues rather than complex grammatical mistakes. For professional writing or academic papers, consider using a more advanced tool alongside this one.
Your text is processed entirely in your browser using JavaScript pattern matching. Nothing is sent to any server, API, or third party. There is no account required and no data is saved. This makes it safe for checking sensitive documents, emails, or private notes without worrying about your words being stored or analyzed by anyone else.