Keyword density guide with 10 free tools

Keyword density guide with 10 free tools

Are you not clear on how much keyword density is good for SEO? We are always doubtful during content writing if this basic thing is not properly known. But You are going to learn every necessary thing about it. So you can write your good post without any doubt. Let’s start.

Keyword density

Let us first understand What is Keyword density. In simple words, It is the ratio of SEO keywords used over the total words for particular content. Even you can understand it by example.

Let’s say, the total number of words in your post is 1000. For more simplicity, we think that post is about ‘Computer’. Here you use it 10 times in your post.

Now it can be calculated in two general ways

1) Fraction: Here density is 10/1000 = 0.001

2) Percentage: Here fraction is multiplied by 100. So 0.001*100 = 0.1 %

There is one more advanced method for determining keyword density. It TF-IDF.

What is TF-IDF

In broad terms, TF-IDF is Term Frequency – Inverse Document Frequency.

Let’s take a word – “This website contains matching content”. It is easy for us to understand. But machines cannot understand it properly. They will convert it into a vector.

Now how many keywords are matching with your content is a range of 0-1. Here O indicates no relevancy of the document and 1 indicates perfect relevancy of the document. As much the value is high, the better the relevancy. That’s the way matching chooses the relevance of the document.

Sometimes, it may be tempting to enter lots of keywords in one post. But it can spoil the keyword density of SEO in the eyes of search engines. It is termed keyword stuffing.

Keyword stuffing

Technically, when an illegal attempt is done in a webpage loading for manipulation the rank in the google search result is known as Keyword stuffing.

It is intensely associated with unnatural keywords which break the flow of content. It is so annoying for readers.

It is also related to putting non-related keywords. For example, Keyword density is the main keyword. Now someone uses TF-IDF intentionally in the wrong place for website rank. And it is not related to the published content. It is keyword stuffing.

This type of work is popularly known as a black hat SEO practice. By doing that, penalization or even removal can be done from SERPs ( Search Engine Results Pages).

Now, it’s time to know the most exciting part.

Optimum keyword density

You often heard that there is no rigid rule for that. But here are some reliable optimum percentages for using keywords without fear.

If you don’t want any risk at all, then it is 0.5%. Various search engines and google work fine.

However, it is very important to avoid keyword stuffing. Then 1-2 % keyword density for SEO is supported by several websites.

Do you want to know the extreme limit? It is always advised to keywords less than 3%.

Wait wait. One more tragedy is here. A famous person like Neil Patel (founder of Ubersuggest) delivered a concept on youtube. There is no issue with it if it comes automatically during writing. And in many cases, we cannot control that.

Let’s say a person heading is a blog. So controlling that type of keyword can ruin the content quality. So one should be wise enough to maintain the quality.

No, I am not trying to confuse you. It is trying to give 360° knowledge and I hope you get it. And you are always free to choose to optimize keyword density in SEO is 0.05% or 1-2%.

In other words, in thousand words 5, or 10-20 keywords can be chosen.

Bonus info:

1) Using keyword variants causes fewer keyword stuffing problems.

2) Which keywords are used in headlines these words are highly recommended to use in content. It helps google understand the relevance of keywords.

3) Know properly where your keyword will be placed in this article.

Wait, now you are introduced to an awesome gift. Guess what?

It is a free tool to check SEO density. Check out some qualitative tools below:

Top 10 free Keyword Density tools

1) Keyword Density Checker:

It is a free tool with simple and easy navigation.

After opening the link you see URL input is selected by default.

put URL to display total keyword density in your entire website.

There is one more option. Select Text input to paste your content. Now keyword density of selected content is n front of you.

Now validate the captcha and click on ‘perform check’ to see the result.

It values your worth time and displays

Three word phrases display
  • Clear keyword frequency and keyword density.
  • Arranging in descending order according to frequency.
  • Shows result differently for one keyword, two keywords, and three keywords.
  • If no issue is found then it will show “Great! No signs of keyword stuffing / Over-optimization
  • If the keyword density is high then the density area of the particular word will be red. A warning also will be shown after the keyword table.

2) Keywordly density checker:

This will help you in various ways.

First, put the URL or paste your work. Then click on check. It will give

Keyword density report
  • It shows the top word density (all) and the top one, two, and three-word density.
  • Overused words will be covered by color.

For more, click on the full report. You get the detection of the following issue

Plagiarism, grammar etc display
  • Plagiarism
  • Grammar
  • Keyword stuffing
  • Readability

It will also show issues intensity like medium or critical etc. That’s great!

3) Small SEO Density Checker:

It has a simple setup. Put an URL and click on ‘check density’. It shows:

Small SEO in action
  • Load time
  • URL
  • Total keywords
  • Top keywords and their frequency. It is under title, description, or <H*> or not.
  • One, two, three, and four SEO keywords separately, their frequency and density. Also shows whether it is under the title, description, <H*> or not.

If you get over-density, may consider revising it.

4) Ninjas Density Analysis Tool:

After putting a specific webpage URL it provides:

Ninjas density analysis
  • Total keywords
  • Total linked words
  • Total not linked words
  • Total stop words or less than 3 characters.
  • One, two, and three keywords separately. Their count and percent.

5) Check keyword density:

It is a little similar to the above Ninjas tool. Enter your URL. You will find:

Keyword display
  • Total words
  • Total linked words
  • total non-linked words
  • Total less than than 3 characters or stop words
  • One, Two, and Three words and their count.

6) THE HOTH Density Tool:

THE HOTH is itself an awesome free tool for multiple things in SEO. You can check their different tools. And if you want different types of SEO guides for websites then click this: 50 Best free SEO tools for improvement on Ranking

However, this tool can be used by entering URLs. It will show:

Keywords, frequency, density display
  • One, two, and three keywords
  • Their frequency
  • Their density


It has more options than other tools. You can enter

  • URL
  • Text
  • Documents (.doc, .docx, .pdf, .txt)

This tool provides:

Prepostseo analysis
  • Very structured important keywords
  • One, two, and three words are density separately.
  • No. of times keywords used
  • Density of keyword

8) Webconfs:

Webconfs analysis

Enter an URL. You will get all the word lists in one go. It also shows 1 frequency for all words. Along with that count and density will be shown.

Limitation: It will not show information between two and three words.

9) Textalizer:

Just paste your text and see the below features:

Textalizer keyword analysis
  • Total word count
  • Reading ease
  • Grade Level
  • Natural Sentiment
  • Words
  • Their uses frequency
  • Their density

10) CreatorSEO:

It has diversified eye-attracting features. It has something more than other tools. After entering an URL you can choose separately:

  1. What google can see on your page
  2. One word
  3. Two words
  4. Three Words
  5. Four words
  6. Word cloud
Creatorseo keyword analysis

Not only that It will show for each word:

  • Under Title or not
  • Under description or not
  • Underbody or not
  • Under headings or not
  • Words frequency
  • Words density
  • Density is highlighted with three different colors based on intensity.

Ending session

So you are equipped with the knowledge of many vital things. You knew, what are keyword density and different types of presentations. You also knew the advanced method TF-IDF. Apart from that Keyword stuffing, and optimum keyword density for example is known to you. And finally, you are equipped with lots of free density checker tools to check your content for your whole life. If you want to share any additional information or your thoughts then put them in the comment box. However, can I know which keyword density range looks fine to you?

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