Keyword Density Checker
Analyze any page: total words, unique words and the density of every 1–3 word phrase — the classic on-page SEO audit.
How it works
The page HTML is fetched server-side, scripts and styles are stripped, and the remaining text is tokenized into words. The tool counts every unigram, bigram and trigram, divides by total positions, and flags unnatural density — the fastest way to spot over-optimization before a search engine does.