# Keyword density

> Keyword density describes how often the words a page targets appear in its text. Here it means whether the words from the title also show up in the content.

- **Check ID:** S27
- **Area:** [SEO](https://be1st.ai/glossary/seo)
- **Tool:** [SEO + Security + Performance](https://be1st.ai/tools/ssp-audit)
- **Page:** https://be1st.ai/glossary/seo/keyword-density

## Why it matters

Google penalizes keyword stuffing - artificially repeating keywords. A natural density of 1-3% is optimal. Modern search engines use semantic understanding, so synonyms and related terms are equally important.

## In practice

The old SEO approach of 'cheap shoes, shoes cheap, buy cheap shoes' is penalized today. The Google Panda update in 2011 started penalizing keyword stuffing. Quality content uses keywords naturally in context.

## How be1st checks it

Checks whether the keywords from the title tag also appear in the page text. The check takes the title words longer than 3 characters and counts how many of them occur in the content: at least half means the check passes. It is a simple relevance signal, not a density percentage.

[SEO + Security + Performance](https://be1st.ai/tools/ssp-audit), SEO tab.

Every check ends as: Pass, Warning, Fail.

## Sources

- [Google Search Essentials](https://developers.google.com/search/docs/essentials) (Google Search Central)
- [SEO Starter Guide](https://developers.google.com/search/docs/fundamentals/seo-starter-guide) (Google Search Central)

## Related terms

- [Title tag](https://be1st.ai/glossary/seo/title-tag): The title tag is the HTML `<title>` element that names a page. Browsers show it in the tab and search engines usually use it as the clickable headline of a result.
- [Hreflang tags](https://be1st.ai/glossary/seo/hreflang-tags): Hreflang tags tell search engines which language or regional version of a page to show to which users on a multilingual website.
- [Pagination (rel prev / next)](https://be1st.ai/glossary/seo/pagination-rel-prev-next): Pagination splits a long list across several pages. The rel='prev' and rel='next' links mark how those pages follow each other.
- [Breadcrumb navigation](https://be1st.ai/glossary/seo/breadcrumb-navigation): Breadcrumb navigation is the trail of links (Home / Category / Page) that shows where a page sits in the structure of a website.
- [Title length](https://be1st.ai/glossary/seo/title-length): Title length is the number of characters in a page's title tag. A short title wastes space in search results, a long one gets cut off with an ellipsis.
- [H1 heading](https://be1st.ai/glossary/seo/h1-heading): The H1 is the main heading of a page, the `<h1>` element. It tells readers and search engines what the page is about, so each page should have exactly one.