Spot overused keywords and balance topical coverage quickly.
Calculates the exact percentage of each keyword relative to total content words. A density under 3% is generally safe; 3-5% is a warning zone; over 5% risks triggering Google's spam filters and degrading your content quality score.
Identifies the 20 most frequently used keywords in your content after filtering stop words. This reveals your content's topical focus and helps you spot unintentional keyword repetition or missing topic coverage.
Automatically flags content where any single keyword exceeds safe density thresholds. Keyword stuffing is a well-known negative ranking factor that can result in manual penalties or algorithmic demotion.
Keyword density was once the primary on-page SEO metric, but modern search engines are far more sophisticated. Today, it serves as a guardrail rather than a target — ensuring you haven't accidentally over-optimized or under-mentioned your target terms. Google's algorithms can detect keyword stuffing and will demote pages that sacrifice readability for keyword repetition. The goal is natural language that covers the topic comprehensively.
Repeating your target keyword more than 5% of total words makes content read unnaturally and can trigger Google's spam detection. Modern SEO relies on semantic relevance and topic coverage rather than raw keyword repetition.
Google's BERT and MUM algorithms understand synonyms and related concepts. Content that only uses the exact keyword phrase misses ranking opportunities for related searches and often reads unnaturally.
Even if overall density is safe, clustering keywords in one section (like the introduction) while leaving other sections keyword-free creates an uneven signal. Distribute keywords naturally throughout the content.
Your keyword density should be comparable to top-ranking competitors. If they use a term at 1.5% and you use it at 4%, you may be over-optimizing relative to what Google expects for that query.
There is no perfect number, but keeping individual keyword density under 3% is widely considered safe. The most important factor is that content reads naturally. If a keyword feels forced when reading aloud, it's probably overused regardless of the percentage.
Yes. Common words like "the", "and", "is", "of", "to" are excluded because they carry no topical meaning. This gives you an accurate picture of meaningful keyword usage in your content.
Excessive keyword density (stuffing) is a confirmed negative ranking factor. Google's SpamBrain algorithm specifically detects and penalizes keyword-stuffed content. However, having a keyword at 0% density means Google may not understand what your page is about.
Keyword stuffing is the practice of unnaturally repeating keywords to manipulate rankings. Google detects it through statistical analysis of term frequency, comparison with natural language patterns, and evaluation against similar content in the index. Penalties range from ranking demotion to manual actions.
Use a mix of your primary keyword and natural variations (synonyms, related terms, long-tail phrases). Google's NLP models understand semantic relationships, so "best running shoes", "top running sneakers", and "running footwear" all reinforce the same topic without triggering stuffing detection.
For a 1,000-word article, using your primary keyword 10-15 times (1-1.5% density) is typically natural. Place it in the title, first paragraph, one or two subheadings, and naturally throughout the body. Use variations for the remaining mentions.
Meta tags have different rules. Your primary keyword should appear once in the title tag and once in the meta description. There is no density calculation for these short elements — the focus is on natural inclusion and click-appeal.
TF-IDF (Term Frequency-Inverse Document Frequency) is a more sophisticated version of keyword density that considers how common a term is across all documents, not just yours. It helps identify terms that are distinctively important to your topic rather than just frequently used.