Count every word, on demand.

Using unicode word boundaries: a word is an unbroken run of letters, numbers, apostrophes or hyphens. So 'don't' is one word, 'state-of-the-art' is one word, and numbers count. Different tools draw these lines slightly differently, which is why counts vary a little between them.

A sentence ends at a run of . ! or ? followed by a space or the end of the text; a paragraph is any block of text separated by a blank line. Headlines without punctuation merge into the following sentence count, so treat the sentence number as a good approximation, not gospel.

The share of all words that a given term (or two-word phrase) represents. It matters less as a target and more as a mirror: if your intended topic is nowhere in the top terms, the text is probably about something else than you think. Do not stuff keywords for AI engines; they quote passages that answer questions, not passages that repeat words.

No honest fixed number exists. AI answer engines lift the passage that answers the question, whether the page is 400 or 4,000 words. What correlates with getting cited is structure: answer-first openings, self-contained passages and question-shaped headings. Length is a side effect of covering the question properly.

Long sentences are harder to quote. AI engines favor passages that stand alone, and a 40-word sentence rarely does. If your average creeps past 25, look for sentences doing two jobs at once.

No. Counting happens in your browser when you press Count words; nothing is sent to a server, logged or stored.