Keyword density refers to the percentage of times a keyword or phrase appears on a webpage compared to the total number of words on the page. It is a concept used in the context of search engine optimization (SEO) as a way to determine the relevance of a webpage to a specific keyword or phrase. The idea is that the more frequently a keyword appears in the content, the more relevant the page is likely to be for that keyword. However, it’s important to maintain a balance, as overuse of a keyword, known as keyword stuffing, can lead to a negative user experience and may be penalized by search engines. The optimal keyword density is debatable and can vary depending on the search engine’s algorithm, but it typically ranges from 1% to 3%. To calculate keyword density, you divide the number of times a specific keyword appears on a page by the total number of words on the page, and then multiply the result by 100 to get a percentage. Effective SEO practices involve using keywords naturally and contextually within high-quality content to improve a webpage’s search engine rankings while providing value to the reader.