Keyword Density Checker
Enough is Enough, Don't Keyword Stuff
Keyword stuffing is defined as adding keywords that are irrelevant to the page, or user experience in an attempt to gain additional rank. Having the right keyword density, or ratio of keywords to content is one of the most important factors in an effective onpage SEO strategy. Google has already addressed keyword stuffing with their Panda algorithm change, on April 11th, 2011 (and multiple revisions since then - see Moz's algorithm change calendar). The information listed below is quoted directly from the Google Webmaster help page, regarding irrelevant keywords.
""Keyword stuffing" refers to the practice of loading a webpage with keywords or numbers in an attempt to manipulate a site's ranking in Google search results. Often these keywords appear in a list or group, or out of context (not as natural prose). Filling pages with keywords or numbers results in a negative user experience, and can harm your site's ranking. Focus on creating useful, information-rich content that uses keywords appropriately and in context."
Don't "Over-Optimize" Your Keywords
Even though it may be hard to believe, there are ways to over-optimize your site. Having a very high keyword density ratio on any given page of your site throws up a red flag to Google. (Bing and Yahoo are a bit more relaxed on this, although extreme cases are still ranked lower.) By using the Keyword Density Checker provided by our friends at WebConfs, you will be able to clearly indentify the most popular keywords on the page, and check for any over-optimization. The most used keywords on your page will be displayed in a larger font size, towards the top of the page.
If you found this tool valuable, check out some of the links below. Still not satisfied? Try this free keyword density analyzer tools from SEOBook and Internet Marketing Ninjas' Keyword density tool. Both are free resources for checking the keyword density of your web pages.
Helpful External Links