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Keyword Density Checker

Paste any text and instantly analyse keyword frequency and density. Supports unigrams, bigrams and trigrams with stop-word filtering. Useful for auditing content before publishing or checking for keyword stuffing.

What gets checked

  • Unigram, bigram and trigram frequency analysis
  • Keyword density as a % of total words
  • Stop-word filter to focus on meaningful terms
  • Visual frequency bar for quick comparison
  • Word count, sentence count and character stats
  • Fully client-side — your text never leaves your browser
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N-gram size
About keyword density

Keyword density is the percentage of times a keyword appears in a text relative to the total word count. For SEO, a density of 1–2% for your primary keyword is generally healthy — higher risks keyword stuffing. Use bigrams and trigrams to analyse long-tail phrase frequency.