Our free Basic Grammar Checker proofreads your sentences for spelling typos, capitalization errors, spacing faults, and awkward phrasing in real-time. Supports both US and UK English dictionaries with visual error highlighting and instant plain-text corrections. Operates 100% locally in browser memory — no account creation, no cloud uploads, and total privacy for your sensitive writing.
Type or paste your draft paragraph into the left input panel.
Toggle auto-capitalization, spacing, spelling, and phrasing rules in the options panel.
Review highlighted issues in Visual view or copy corrected prose in Plain view.
Instant proofreading rule checks highlight spelling typos, uncapitalized sentence starts, and punctuation errors as you type.
Switch between American and British English spelling preferences to align with target publisher and academic guidelines.
Your confidential letters, emails, and manuscripts are proofread locally in browser RAM with zero data retention.
Subject-Verb Agreement, Tense Consistency & Punctuation: Grammatical accuracy relies on consistent syntax: Subject-Verb Agreement (ensuring singular subjects match singular verbs), Tense Continuity (avoiding erratic shifts between past, present, and future within paragraphs), and Punctuation Mechanics (correct comma placement, apostrophes, and quotation marks).
Style Guide Compliance (APA, MLA, Chicago, AP): Different writing domains enforce distinct mechanical rules. Academic manuscripts follow APA 7th Edition or MLA 9th Edition for formal citations and passive structures. News organizations use AP Stylebook guidelines for concise active sentences and serial comma exclusions.
100% In-Browser Proofreading Privacy: Proofreading sensitive manuscripts, legal documents, or confidential client emails requires strict data privacy. BunchTool scans your text for grammatical errors 100% locally in web browser RAM tab memory without uploading text to remote cloud servers.