Improving the keyword density on your website is one of the
fastest and simplest ways to increase your site's visibility in the
search engine results pages.On page keyword density may not be the
most important. Off page keyword density in anchor text of
back-links are more significant and should be given more emphasis.
However we should not completely discount the effect of keyword
density of the most desired keywords on a particular page and also
across the site on other pages and links within the website.
Keyword density in SEO is a means to check the on-page usage of
keywords and words/phrases in general. It is a measure of the
percentage of times a keyword/phrase is used on a web page compared
to the total number of words/phrases on the page. When designing a
webpage there are generally acceptable ranges you want to be in. If
the keyword density is too high, search engines can penalize your
site for 'keyword stuffing'. If your keyword density is too low,
then it might be determined to not be relevant which will make it
harder to rank for your keywords.