Free Keyword Density Checker

Analyze keyword frequency, phrase usage, and density distribution for better on-page SEO.

Keyword Density Checker

Professional SEO text analysis and frequency distribution tool.

Frequently Asked Questions

1. What is Keyword Density?

Keyword density refers to the percentage of times a specific keyword or phrase appears in a piece of content compared to the total word count. It is a fundamental metric used by SEO professionals to ensure a topic is properly covered without "stuffing" the text.

2. What is the "Optimal" Keyword Density?

While there is no "perfect" number that guarantees a #1 ranking, most SEO experts recommend keeping your primary keyword density between 0.5% and 2.5%.

  • Under 0.5%: Search engines may not understand the primary topic.
  • Over 3.0%: You risk being flagged for "Keyword Stuffing," which can result in search engine penalties.
3. What are "Stop Words" (Common Words)?

Stop words are frequently used words like "the," "is," "at," and "which." Since these appear in almost every sentence, they can clutter your data. The Exclude Common Words toggle filters these out so you can focus on meaningful keywords. You can customize this list by clicking the Settings (Gear) icon.

4. What do 2-Word and 3-Word toggles do?

These analyze N-grams:

  • 1-Word: Individual keywords (e.g., "Marketing").
  • 2-Words: Short-tail phrases (e.g., "Digital Marketing").
  • 3-Words: Long-tail phrases (e.g., "Best Digital Marketing").

Long-tail phrases are often easier to rank for because they are more specific.

5. Why does the Target Keyword indicator turn red?

The indicator is a warning system:

  • Grey: Low density. You might need to mention your target topic more often.
  • Green (Pulsing): Optimal density. Your content is well-balanced.
  • Red: High density. We recommend reducing the frequency of that specific phrase to avoid looking spammy to search engines.
6. Can I save my analysis?

Yes. Click the Export CSV button to download a spreadsheet containing the full breakdown of your keywords, their counts, and their exact percentages. This is useful for client reports or content audits.

7. Does this tool store my text?

No. All processing happens locally in your browser. Once you refresh the page or click Clear All, your text is permanently removed.

8. How do I find where a keyword is used?

Simply click on any keyword in the results table on the right. The tool will automatically scroll to and highlight the first occurrence of that word in the text editor for you.

Explore More Tools

Discover more free tools to help you build, test, and optimize your site.