Analyze keyword frequency and density for SEO. Free, private, runs in your browser.
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Keyword density is the percentage of a document that a specific word or phrase occupies. If 'keyword density' appears 5 times in a 500-word article, its density is 1%. For decades this was a direct ranking signal; today it's more nuanced — modern search engines understand topical relevance beyond raw frequency — but density remains a useful sanity check that your target terms are actually present without overdoing it.
The tool analyzes your content at 1, 2, or 3 word phrase lengths. Single words surface your dominant vocabulary; 2-word phrases (bigrams) reveal natural compound terms and potential long-tail targets; 3-word phrases (trigrams) expose specific claims and section themes that make good H2 or H3 candidates.
Stop words like 'the', 'and', 'of' dominate almost any English document but carry zero SEO signal. Excluding them (the default) surfaces your meaningful vocabulary. The minimum-word-length slider drops very short tokens — useful when analyzing technical content where you want to focus on substantive terms rather than articles and prepositions.
Most SEOs use density tools with a target keyword in mind. Enter yours in the focus-keyword field and a dedicated card at the top shows its count, density, and rank among all phrases. If your focus keyword doesn't appear in the top 20 — or worse, doesn't appear at all — you have a concrete optimization target.
Conventional guidance is 1 to 3 percent for the primary keyword. Higher risks keyword-stuffing penalties, lower may signal weak topical relevance. Focus on natural writing — quality phrases, not forced repetition.
Words like 'the' and 'and' dominate any text but carry no SEO signal. Excluding them surfaces the meaningful terms that actually influence ranking.
Yes. Switch the phrase-length selector to 2 or 3 to see the most-repeated multi-word phrases — useful for finding natural anchor text and heading candidates.
Enter your target keyword to see a dedicated card showing its count, density, and rank among all phrases. This is how most SEOs actually use these tools — they have a target in mind and want to check its prominence.