Keyword Density and On-Page SEO Optimization Guide
Calculate term frequency and repetition percentages across your blog posts and web copy. Balance semantic relevance with editorial readability to rank on Google without over-optimization penalties.
How is Keyword Density Calculated?
Keyword density expresses how frequently a specific term or search phrase appears relative to the total number of words in an article:
For example, if your primary keyword appears 15 times in a 1,000-word article, your keyword density is exactly 1.5% (15 ÷ 1,000 × 100 = 1.5%), falling squarely in the safe zone.
Recommended Keyword Density Ranges
Under-Optimized
Search engine spiders may struggle to distinguish your primary subject from competing background topics.
Optimal Sweet Spot
Natural semantic density. Search algorithms clearly categorize your content without detecting manipulation.
Keyword Stuffing Risk
Triggers algorithmic penalties for unnatural phrasing and repetitive copy, harming organic rankings.
Analyzing 1-Word, 2-Word, and 3-Word Phrases (N-Grams)
Modern users search via natural multi-word phrases. Our analyzer identifies:
- 1-Word Terms (Unigrams): Core broad topical concepts.
- 2-Word Phrases (Bigrams): Targeted compound phrases like "salary calculator" or "image converter".
- 3-Word Phrases (Trigrams): High-intent long-tail phrases such as "how to calculate hours" or "transparent png signature".
Frequently Asked Questions
- Why filter stop words during analysis?
- Stop words (such as "the", "and", "in", "of") account for over 40% of standard English text. Filtering them highlights meaningful commercial and informational keywords.
- How should I incorporate semantic LSI synonyms?
- Rather than repeating the exact same head phrase 30 times, use related contextual synonyms. Google's natural language AI understands contextual topic relationships.
- Is my unpublished copy safe from scraping?
- Yes. All lexical analysis runs strictly inside your local browser instance with zero server-side storage or tracking.