Grammar Checker

Exactly what this grammar checker looks for

This tool scans your text for a specific, fixed set of rule-based patterns rather than trying to understand your sentences the way a human editor would. It flags commonly confused word pairs and misused phrases "could of / should of / would of / must of / might of" instead of "could have," "your welcome" instead of "you're welcome," and "alot" instead of "a lot" along with repeated consecutive words ("the the"), multiple consecutive spaces, repeated punctuation like "??" or "!!", sentences that appear to start without a capital letter, and the pronoun "i" typed lowercase instead of "I".

Grammar, spelling, and style are three different things

People often lump these together, but they're separate problems. Spelling is whether a word is spelled correctly on its own (this tool doesn't check that it has no dictionary). Grammar is whether words are combined correctly verb tense, subject-verb agreement, sentence structure. Style is about clarity and tone passive voice, wordiness, repetition of ideas. This tool sits in a narrow slice of the grammar category: it catches specific, well-defined error patterns it can detect with simple text matching, and it doesn't touch spelling or style at all.

Why isn't this as thorough as Grammarly or Word?

Full-featured grammar checkers use machine learning models trained on huge volumes of text to understand context, sentence structure, and meaning that's how they catch subject-verb agreement ("the list of items are" should be "is"), comma splices, dangling modifiers, and awkward phrasing. This tool runs entirely in your browser using lightweight pattern matching against a fixed list of known mistakes, which makes it instant and completely private, but structurally unable to catch anything outside that list. Think of it as a fast first pass that catches the "quick and obvious" errors, not a substitute for a real proofread.

Mistakes worth double-checking yourself

Because this tool can't parse sentence structure, it will miss subject-verb agreement errors, run-on sentences and comma splices, dangling or misplaced modifiers, inconsistent verb tense across a paragraph, and apostrophe misuse in plurals versus possessives (like "the dog's bone" vs. "the dogs ran"). If your writing matters a cover letter, a college essay, a client email it's worth a second read (or a second tool) focused specifically on those structural issues.

FAQ

Does this check spelling?
No this tool focuses on grammar, punctuation, and commonly confused words, not spelling errors. It doesn't have a dictionary to check individual words against.

Is my text stored or shared?
No. Everything runs locally in your browser using JavaScript your text is never uploaded or saved anywhere.

What exactly counts as an "issue"?
Each issue is a match against one of a fixed set of patterns a known misused phrase, a repeated word, unusual spacing or punctuation, a likely missing capital letter, or a lowercase "i" pronoun. The tool counts how many times each pattern appears and lists them individually rather than giving a single vague grammar score.

Can it catch subject-verb agreement errors?
No. Detecting agreement errors requires actually parsing sentence structure to know which noun a verb refers to, which is beyond what simple pattern matching can do. A dedicated grammar engine or a careful read-through is the way to catch those.

Why did it flag something that isn't actually wrong?
Pattern matching doesn't understand context, so it can misfire for example, a deliberately repeated word for emphasis ("no, no, never") or a lowercase "i" inside a variable name or code snippet can get flagged even though nothing is actually wrong. Treat every flagged item as something to glance at, not an automatic correction.

Is this a replacement for a human editor?
No. It's a quick, private way to catch obvious slips before you submit or send something, but it has no understanding of tone, clarity, or whether your argument makes sense jobs a human editor (or a full AI-based grammar tool) is still better suited for.