📊 Keyword Density Analyzer

How Keyword Density Analysis Works

The keyword density analyzer processes text content and calculates word frequency statistics:

**Basic formula**: `Keyword density = (number of times keyword appears ÷ total number of words in text) × 100`

**Example**: If your text has 100 words and your target keyword "calculator" appears 3 times: - Density = (3 ÷ 100) × 100 = 3%

**Stop-word filtering**: Common words like "the", "and", "or", "to", "a", "in" are optionally filtered out to give a more meaningful density for content words. This is especially helpful for natural-language content where function words would otherwise dilute the keyword density calculation.

**Keyword stuffing threshold**: Densities above 3-5% are generally considered keyword stuffing, which can negatively impact SEO readability and may trigger search engine penalties. The natural, readable range is 1-2% for primary keywords, with related terms and LSI (Latent Semantic Indexing) terms making up the remainder of the content vocabulary.

**Related term suggestions**: The analyzer also identifies the most frequent words in your text (excluding stop words), which can help you ensure your content covers the topic comprehensively without over-optimizing for a single keyword.

• 100% private - text never uploaded to server
• Stop-word filtering option
• Density percentage display
• Related word frequency list

SEO Content Guidelines

Based on the density analysis, here are evidence-based content optimization guidelines:

1. **Primary keyword density**: 1-2% of total word count. For a 1,000-word article, include your primary keyword 10-20 times naturally.

2. **LSI/related terms**: Include semantically related words and phrases (synonyms, variations, topic-related concepts). This helps search engines understand the content's context without keyword stuffing.

3. **Natural writing priority**: Write for humans first. If the keyword density feels forced, the content likely is. Search engines penalize obvious stuffing more than slightly under-optimized content.

4. **Keyword placement**: Include the primary keyword in the first 100 words, in H1/H2 headings, and in the meta title/description for maximum SEO impact.

5. **Avoid the same keyword in every paragraph**: Distribute keyword usage naturally throughout the text. Vary with pronouns, synonyms, and related concepts.

6. **Monitor overall text length**: Density is relative to total word count. A 500-word page with 5 keyword occurrences (1%) is optimal; the same 5 occurrences in a 200-word page (2.5%) may be perceived as stuffing.