Keyword Density Analyzer

Keyword density measures how often a target keyword or phrase appears in a piece of content relative to the total word count. Search engines use keyword frequency as one of many signals to understand what a page is about. If a keyword appears too rarely, the page may not rank for that term; if it appears too often, search engines may penalize the page for keyword stuffing — an outdated SEO tactic that hurts rankings. The generally accepted sweet spot is 1-3% for primary keywords. This tool calculates density for any keyword you enter and also surfaces the most frequent single words, two-word phrases (bigrams), and three-word phrases (trigrams) in your content. This helps you spot unintentional repetition, find natural keyword variations you can leverage, and ensure your content reads naturally while staying optimized. All processing happens in your browser — your draft articles and unpublished content never leave your device.

Professional SEO writers use keyword density as a post-writing check rather than a writing guide. Write naturally first, then paste the draft into this analyzer to verify your target keyword appears at a healthy frequency. Check whether related two-word and three-word phrases appear naturally — search engines reward semantic richness over mechanical repetition. If density is too high, replace some keyword instances with synonyms or rephrase sentences. If too low, look for natural places to add the keyword, such as subheadings, image alt text, or the introduction paragraph. Pair this tool with the Word Counter to track content length targets, the Readability Score checker to ensure your text is accessible to your audience, and the Meta Tag Generator to craft title tags and descriptions that align with your on-page keyword strategy. The combination gives you a complete on-page SEO audit workflow without uploading any content to third-party services.