Analyze keyword density and frequency in your content. View word counts, sentence counts, and top keywords by 1-word, 2-word, and 3-word phrases with stop word filtering.
LevnTools Keyword Density Checker lets you analyze and improve your SEO directly in your browser. Everything runs locally in your browser — your websites and content never leave your device. Unlike cloud-only alternatives that require uploads and accounts, this tool is completely free with no usage limits or watermarks. It is designed for content marketers optimizing blog posts, website owners improving search rankings, SEO specialists auditing client sites — anyone who needs a fast, reliable seo tool without the overhead of installing software. Just open the page and start working.
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Keyword density is the percentage of times a keyword appears in your content relative to the total word count. For example, if a keyword appears 5 times in a 500-word article, the density is 1%.
There is no perfect density, but most SEO experts recommend keeping primary keywords between 1% and 3%. Overusing keywords (keyword stuffing) can trigger search engine penalties.
Stop words are common words like "the," "is," "and" that add little meaning. Excluding them gives you a clearer picture of your content-rich keywords and their actual density.
Multi-word phrases (n-grams) help you find long-tail keywords in your content. These phrases often match how people actually search and can reveal optimization opportunities.
You can paste any amount of text. For large texts over 5,000 words, the analysis runs in a background thread to keep the page responsive. There is no hard limit.