The Keyword Density Checker tool evaluates the frequency of keywords on a webpage and calculates their density as a percentage of total words on the page. Keyword density is an important factor in search engine optimisation (SEO) because it helps search engines evaluate how relevant a webpage is to a certain keyword or phrase. None the less, keyword stuffing, or the use of terms on a page in an attempt to influence search engine results, can seriously damage a website's SEO. The Keyword Density Checking tool can help website owners and SEO specialists in ensuring that their websites are search engine optimised without overusing keywords. By examining the keyword density on a page, website owners and SEO specialists may evaluate if the keyword appears frequently enough to be considered relevant to the page's content, or whether it is overused and may be viewed as keyword stuffing. The Keyword Density Checker tool normally generates a report that contains the keyword density as a percentage, the total number of words on the page, and a list of the page's most frequently used terms. This data can be used to improve the usefulness of the page's content to the term or phrase being targeted.