Keyword density analyzer - Online  The above results show the keyword density & prominence for the words "keyword" & "density" as separate words and also as a two word phrase "keyword density". It seems a higher keyword density coupled with a higher prominence goes some way to explain the ranking order. The exception to this No.4 whose ranking is not due to keyword density or prominence since on both counts it's only slightly different to No.30.
Two other things are striking about the results from all keyword density analyzer's in this three-part article. Firstly, the very wide variation in word count and secondly, the variation in keyword count. The word count by keyword density analyzer's varies by as much as 81.3% (No.10), 44% for No.19 & 41.9% for No.30. In the worst extreme (No.10) the keyword density calculated by the analyzer's varies by 154.4% The keyword counts for No.10 & 30 show the most variation. The GRKda keyword density analyzer counts 3 occurrences of the word "keyword" and 3 of "density". The online keyword density analyzer counts 8 and 5 respectively. For position 30 the GRKda keyword density analyzer counts 13 for "keyword" and 9 for "density" whilst the online keyword density analyzer counts 8 and 6 respectively. In the worst case this is a keyword count variation of 62.5%. The GRKda keyword density analyzer was set to look for keyword's in the Title, Link text, Links, Header tags (h1-h6), Meta Keyword's & Description tags, Body text & Alt tags. In fact the only place it was not set to look are the comment tags, but then neither was the online keyword density analyzer. Both the SEO & GRKda keyword density analyzer and the Ranks online keyword density analyzer can exclude words shorter than a defined setting. In Web Position Gold 2 no such option could be found. In all keyword density analyzer's where the option was available it was set to ignore words of 2 letters or less. To another online keyword density analyzer position No.4 had only 10keyword's and a body word count of 969 both of which differ from the figures already seen. Can we use any tool to compare one page with another ? None give consistently high word & keyword counts or consistent low ones, a relative analysis of pages is also questionable. Keyword Density Analyzer Conclusions Three software keyword density analyzer tools and two online keyword density analyzer tools have been shown to all produce widely differing results.Word count (variation 81.3%), keyword count (variation 62.5%) and as a result wide variations in keyword density (variation 154.4%). This whilst using analyzer's on 5 different pages with Google rankings from No.1 position to No.30. It seems likely with 5 different tools all producing different results that Google itself also arrives at yet other figures for word count, keyword count, prominence & keyword density. Based on the tests, a keyword density analyzer doesn't produce absolute results or consistent relative comparisons between pages. The differences in word count and keyword count between these keyword density analyzer's could not be explained by a word exclusion filter. As to how important keyword density is, the results are not conclusive. The rankings of the test pages cannot be explained just on the basis of keyword density, prominence, word count, keyword's in the meta tags, headers, links or Alt tags. This should come as no surprise, since we know other factors like on & off site links and link popularity all play a role. In a later article I show how a missing factor explains the rankings of these test pages. What may come as a surprise is that the analyzer tools we rely upon give such widely differing results. Does this mean we should stop using them ?
No I don't think so, not until something better comes along. Optimization with 3 software analyzer's used in these tests is at: Improved search engine placement | 
