About the word counter
Word counts govern more than they should. Essays have limits, meta descriptions get truncated, tweets have a hard ceiling, and clients specify article lengths to the hundred. This counter updates every statistic live as you type or paste.
You get words, characters with and without spaces, sentences, paragraphs and unique words. Characters excluding spaces is the count that matters for most form limits; characters including spaces is what a Twitter-style limit uses. Both are shown because guessing wrong costs you an edit.
Reading time assumes 238 words per minute, the figure from the most widely cited silent-reading research, and speaking time uses 130 words per minute, which is a comfortable presentation pace. Speaking time is the more useful of the two if you are writing a talk — most people badly overestimate how much script fits into ten minutes.
Keyword density lists your most frequent words and phrases with their share of the total, filtering out common stop words so the results are meaningful. It also counts two- and three-word phrases, which is usually more revealing than single words. For search purposes, a primary term landing somewhere between half a percent and two percent reads naturally; substantially above that starts to sound like keyword stuffing to both readers and search engines.
The text never leaves your browser. Nothing is sent anywhere, nothing is stored, and closing the tab discards it — which matters when you are pasting a draft under NDA into a random website.