what is keyword density?

Keyword density is a foundational aspect of on-page SEO. When used correctly, it can help attract search engines and boost a page’s visibility on search engine results pages (SERPs). When ignored, it can keep a page from ranking or even result in a search penalty, removing it from SERPs altogether.

Keyword density is an element of keyword optimization that refers to the number of times a target keyword is used on a webpage. It is a percentage that represents how frequently the target keyword appears relative to the number of words on the page. Keyword density is one signal search engines can use to determine whether or not a piece of content is relevant to a particular keyword or phrase.