SEO Myths: Page Size and Keyword Density article updated April 2014.

Had a discussion at (in 2006: time passes so quickly, that’s 8 years ago!) under the thread “Re: Links and PR” with Borek, and put my answer here instead of on the SEO newsgroup (which in 2014 is DEAD other than a Google Groups version).

Won’t waste some half decent content on a newsgroup when I can write a post SEO Myths: Page Size and Keyword Density :-)

Google SEO Page Size

Borek asked- “Let’s see… Is there optimal size for a page SEO Wise?”

I replied-
For Google below 101KB and preferably more than a few paragraphs of text so your content includes derivative search phrases (based on the main phrase for the page) for maximum overall related SERPs, beyond that it doesn’t matter.

2014 SEO the 101KB Google limit is no longer an SEO issue, Google indexes significantly more now note: even 101KB of code which didn’t include images was a LOT of text content. In 2014 PageSpeed (how fast a page loads) is important Google SEO wise, so creating enormous content filled webpages is not generally recommended.

Borek replied (future response from Borek are indented)-

Well, you are asking others to do some testing before posting their SEO ideas

And that takes us to my latest response (only on this blog).

I don’t think I’ve said the above exactly?

Pretty sure it was more along the lines that there should be less of the “well known SEO fact” type postings where a few regulars hold a belief, post about it a lot and before you know it, it’s a well known SEO fact.

Best example is HTML code validation is important for SEO, where the evidence suggests validation per se is irrelevant, it’s an SEO myth, but on the newsgroup it had been posted so often HTML validation was a ranking factor it had become a well known SEO fact!

but you are on your own doing the same mistake of posting things that can be easily falsified with simple test :)

You’ve made the mistake of assuming I haven’t run SEO tests on this. I create hundreds of SEO tests, so have a lot of SEO research data to work from.

Keyword Density Analysis

Size DOES matter – there is a bell curve with optimal size of the page. When comparing series of pages of identical keyword density, all other  things being identical, pages of some particular size are ranked higher.

Assuming you did the page size SEO tests, your tests are flawed since you are using keyword density as a variable which you later state there is no optimal keyword density (I’ve got similar results on keyword density tests BTW).

If there is no optimal keyword density how can you use it as a standardizing factor in SEO tests to determine the optimal SEO page size?

You’ve made the assumption that as long as you keep the keyword density the same you will only see the effects of increased/decreased page size allowing the analysis of the best SEO page size: I’m assuming you mean amount of content rather than actual page size, since most code is ignored, it’s content that matters, feel free to SEO test it :-)

As you later rightly state the more you use a keyword phrase (within reason, guess you aren’t thinking keyword density above even 10%) more likely it is you’ll get a SERP, however as the amount of content increases trying to keep a high keyword density results in spammy content!

I’ve found through various SEO tests on keyword density that-

High content + very high keyword density equals poor rankings


Low content + very high keyword density doesn’t equal poor rankings (doesn’t mean you’ll necessarily get good rankings though)

Keyword Density Tools

Keyword DensityGoing off on a slight tangent here to cover keyword density tools like Squirrly WordPress SEO plugin and SEOPressor WordPress SEO plugin and even Yoast WordPress SEO plugin.

WordPress SEO plugins like these have built in keyword density tools, they measure the density of phrases you are targeting. You might think what a useful SEO feature, we can plug in a keyword phrase like “Best Keyword Density” and measure the percentage usage and follow whatever ideal keyword density we believe is best, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%…… You tell me what ideal is?

Slight problem with this sort of built in WordPress SEO tool, it only measure the body content, it completely ignores what your theme and plugins are generating AND equally important comments.

I don’t check keyword density, so have no idea what the current density of any keyword phrase is for this article. For the sake of SEO analysis let’s say I believe 2% is the perfect keyword density and it shouldn’t go below 1.5% or above 2.5% and when I finish this article I have the phrase “Best Keyword Density” at precisely 2% according to whatever built in WordPress SEO tool I’m using. This was based on a 1,000 word article (I have no idea how many words I used), so to get to 2% I must have used the phrase 20 times (bloody hell, that’s a lot!).

Keyword Density Changes

It’s perfect right? Wrong, go look at the comments, right now there’s three comments and one of them has the title (the Stallion Responsive theme I use has a feature to give comments titles) “What is the Best Keyword Density?”.

Hmm, that covers our targeted phrase, it adds another instance of “Best Keyword Density”. So now we have one too many uses of the phrase, oh wait we haven’t counted the comments text, how many words are within the comments?

I have three comments, looks like between them there are ~300 words, should I get the keyword density calculator out and count all text on the page and determine the actual keyword density?

OK, so I went to the trouble of measuring the pages entire keyword density and found I’m short one instance of the “Best Keyword Density” phrase, so I add it to the main article.

Hmm, what do I do if someone else comments? Should I again get the keyword density calculator out and edit the post again accordingly?

As you can see measuring keyword density is fraught with problems. All the WordPress SEO plugins that measure keyword usage in one way or another are useless, there are some very basic soft rules like if you want a SERP add it to the title tag, try to add an image that targets the SERP, use headers (H1-H3), use the phrase as anchor text within outbound links and within inbound links. Really basic SEO techniques that do not require SEO tools to measure keywords densities.

Keyword Density SEO Myth

OK, back on track with the SEO discussion…

What I’ve deduced from this is if all you care about is one keyword phrase, keep the page low on content and with a high keyword density, but if like me you want maximum targeted traffic from long tail SERPs as well ignore keyword density per se (don’t waste your time measuring it) instead make high content pages (like this one you are reading now) and include as many related derivative keyword phrases (SEO synonyms) as possible on the page without going spammy, since one page can obtain more than one SERP.

SEO Myths

A page with 300 words could have a high keyword density of a phrase without being spammy, if I were targeting a page for SEO Myths I could include one of the main phrases 10 times within a 300-400 word article: easy to do with a list of SEO Myths like

SEO Myth 1: blah, blah under 10 words…
SEO Myth 2: blah, blah under 10 words…
SEO Myth 10: blah, blah under 10 words…

That approach could generate a high 10% keyword density article.

A page with 3,000 words to achieve a high keyword density would require using the phrase SEO Myth 100 times, now that would be difficult and seriously spammy.

Ignore Keyword Density

As I’ve said many times here thousands of low traffic long tail keyword SERPs tend to result in more traffic than a few high traffic SERPs and the traffic is far more stable.

Drop a few places with a high traffic SERP (like SEO is a hard competitive SERP) and watch your traffic die over night, do the same with 50% of your low traffic SERPs and you’ll still have enough targeted traffic from the remaining long tail keywords to survive while you gain more traffic.

What was a rather shocking discovery for me (reported earlier to the group) the same doesn’t hold for keyword density – there is no optimal KW density, the higher the better. I never tried above 50%, but it just doesn’t make sense.

I’ve got similar results (within reason, not talking keyword density of 20%+) and it does make sense if you look at this from the perspective of Google wanting high quality content, not spammy content in it’s index.

It’s easy to get a page to above 10% keyword density without going spammy IF there isn’t much content (see earlier SEO Myth example), but try to do the same with a reasonable size page and keeping the keyword density up is impossible without going spammy.

So from Google’s perspective when it finds a page with a lot of content and very high keyword density (relatively speaking) it can be reasonably confident it’s a spammy page. This can be incorporated into their search engine ranking algorithm without throwing out too many babies with the bath water.

Therefore Keyword Density per se being important to SEO is an SEO Myth, don’t waste your time with keyword density tools.

You can see the whole thread from 2006 at Google Groups!topic/

If you wish to make a comment feel free to comment below.

David Law

David Law > AKA SEO Dave
: 20+ Years Experience as a Freelance SEO Consultant, WordPress SEO Expert, Internet Marketer, Developer of Multiple WordPress SEO Plugins/SEO Themes Including the Stallion Responsive Theme.

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