Catch subject-verb agreement errors, double negatives, and capitalization mistakes — instantly, right in your browser.
This is a rule-based grammar checker — it scans for specific, well-documented error patterns rather than using a full AI language model. It currently checks for:
It's built to be fast and reliable for these specific cases, not to replace a full editor or professional proofreader.
It catches common, well-defined issues: subject-verb agreement mismatches, double negatives, repeated words, missing capitalization at the start of sentences, and extra spaces. It uses rule-based pattern matching rather than full AI language understanding.
No. This tool catches common, well-defined mistakes, but it can't understand context, tone, or nuance the way a human editor can. For anything important — like a resume, published article, or academic paper — a human review is still valuable.
Subject-verb agreement means the verb in a sentence must match its subject in number. For example, "He runs" is correct (singular subject, singular verb), while "He run" or "They was" are mismatches.
This tool checks for specific, well-documented error patterns rather than understanding full sentence meaning. It won't catch every possible grammar issue — particularly ones that depend on context or word choice rather than a clear rule.
No. All checking happens directly in your browser using JavaScript — your text is never sent to a server, stored, or logged anywhere.