The Top Keyword Density Tools of 2021 Reviewed


keyword density tool

Keyword density refers to the number of times a specific keyword appears in a given piece of content or webpage. It is also referred to as keyword frequency. But, how important is keyword density, and is it still relevant for SEO?

Content is king, and keyword density is the foundation of Search Engine Optimization and has a direct impact on the visibility of your site content’s Search Engine Results Pages or Search Engine Ranking Pages, in addition to the costs of your site’s marketing campaign. 

What is the Right Keyword Density for SEO?

As we just mentioned, keyword density pertains to the number of times a specific key phrase or keyword shows up within a certain piece of content or a webpage as a percentage or ratio of the full word count.

When it comes to the formula for keyword density, it can be evaluated as a definite figure, if need be. So if you were trying to figure out a webpage’s keyword density or piece of content’s keyword density, you would simply divide the total number of words by the number of times the given keyword appears on that page. This will give you those specific pages or a piece of content’s keyword density.

When it comes to keyword density, there are no clearly defined rules, as is the case with all facets of SEO. So one thing that you’re not going to find is directions from Google telling you the number of keywords your content can and should contain, neither are you going to find specific steps or figures that you can depend on to guide you on keyword density. 

However, there are some reflections that may be able to help your content out and ensure that your content is effective enough to increase your visibility and boost the ultimate exposure and experience of your audience.

SEO spelled on pop up box

Keyword Stuffing

When SEO was in the process of making an appearance, around a decade ago, a technique referred to as “keyword stuffing” was quite popular. The action of filling as many keywords as you want inside a piece of content or on a webpage is known as keyword stuffing. However, this method of SEO felt forced and strange to the reader. As you, would imagine, the entire flow of the content would be ruined and leave the user with a less than desirable experience after reading the content. 

This was ultimately achieved by including footers that were lengthy at the end of pieces of content or web pages, and these footers contained hundreds of keyword variations of frequent or everyday search terms. This practice was most often noticed on hotel websites. They would frequently display footers that contained hyperlinked keywords, and these keywords would take readers to web pages that featured a similar or related stuffed footer.

In today’s post-Panda world, this practice is odd and less frequent. The technique did, however, offer dishonest search engine optimization advantages in this way for site owners to rank high on Google’s results for practically every keyword you would think of. 

And the only reason they got away with it is that Google’s algorithms were not as developed or enlightened enough to decipher these keyword-crammed pages for what it was. Ultimately, it was a cheap hack to manipulate the SERPs, so these pages would rank high on Google’s results.

However, this is not the case today. Google has made lots of changes to search algorithms, and as such, you should refrain from stuffing keywords into web pages as often as possible as it will probably have less than desirable results when it comes to ranking. 

Where Do Keyword Variants Come in?

So if you didn’t already know, over 5 billion searches are handled by Google every day. Every day approximately 15% of those searches are brand new. This means completely new as in, no one has ever searched for those keyword terms in human history before.

How is this possible?

This is very much a reality nowadays since people don’t search the same way they used to years ago. The introduction of artificial intelligence and voice search features on computers and mobile devices has basically changed how users interact with search engines. It’s now frequent or usual to find that organic traffic is driven by hyper-specific search queries, questions, and sentences.

This is because focus keywords now play a different role, and longtail keywords have become more crucial. So keyword repetition no longer controls the relevance or outcome of SEO. So each target keyword is basically a bucket that holds modifiers, plurals, rephrased searches, sentences, and other positively related search terms. On the flip side, once a keyword becomes a bucket, it isn’t easy to decipher keyword density for that specific term. 

However, this doesn’t mean that you should stop optimizing for specific keywords. However, do remember that you’re not simply optimizing for those terms on its own. You are optimizing for hundreds of keywords that are related to that specific keyword.

How Do Keywords Affect the User Experience?

So Google has a new algorithm known as RankBrain, and it basically gives Google the cue to start indexing more semantically.

So when someone searches for “where to find bats,” they could either be looking for baseball bats or the other bats, which are the furry, flying mammals. To offer the best content and find out which type of bat the individual is searching for, personalized content such as the user’s Google search history and location will be pulled by Google. 

Google does also has its ways of deciphering whether a webpage is relevant for a certain keyword, contextually.

seo keyword tool spelled on laptop screen

Top 10 Keyword Density Tools

1.Website Auditor

A complete website analyzing tool, Website Auditor allows you to check your site for technical as well as optimization issues page by page. Furthermore, it explains those issues and suggests the necessary corrections. 

The built-in TF–IDF tool in Website Auditor analyzes the content of your webpages to help enhance the relevance of the topic. Ultimately, it will discover or determine the top 10 websites that your site is competing with for the target keywords and accumulate the essential keywords and phrases they both commonly make use of. 

The tool then suggests you incorporate specific key phrases in your content based on this analysis. You will also be prompted to either increase or decrease the use of certain keywords in your text. 

The bonus is that the Website Auditor encourages you to optimize your pages right from the interface. This tool is available in both the paid and free versions of the software.

2.Seobility

As the name suggests, Seobility is an SEO checker for website optimization and analysis. It basically checks your content and brings to your attention pages that have technical, on-page, or content errors and a few other issues. 

This tool offers a free standalone TF-IDF checker, which basically makes recommendations of improvements for the existing content on your webpages. Allowing you to create new quality content that contains high topical relevance is another option with Seobility. 

The tool will give you a list of pertinent keywords and phrases to include in your pages, based on the target keyword that you input for the check. It will then analyze your content and show you the TF–IDF score. 

Ultimately, this allows you to consider using this or that keyword more often or less frequently on your content pages. Ultimately, it provides you with the information pertaining to your top 10 competitors and the likelihood to check how often they use the same keywords that you do on their sites.

3.SEMrush

When it comes to website optimization and monitoring, SEMrush is one of the most comprehensive software tools on the market. It contains a list of PPC and Seo tools that ultimately helps to adapt your search marketing strategy. SEMrush also contains a term frequency-inverse document frequency algorithm which is built into its on-page SEO checker. 

Ultimately, this feature examines your current pages, contrasts them with competing domains that are higher ranked in Google’s top 10, and makes recommendations on the use of your keywords. The tool will also suggest related phrases and words that could possibly increase the relevance of your page. 

The dashboard also contains an SEO writing assistant which evaluates and monitors your text while you are still writing it. So this helps to give you advice on the use of your chosen keywords and recommends words and phrases to add to your content.

4.Small SEO Tools

If your goal is to analyze the frequency of on-page keyword density, then this is a top tool to use. It’s also quite user-friendly, and you simply need to enter your text or page URL, and this tool will take over. 

Ultimately, it helps in calculating keyword density and is created by the company’s development team. You will be able to eliminate unnecessary stuffing of keywords after this analysis so that your content is not penalized by Google. 

This will also highlight your site score aside from highlighting density. Sites score is basically a measure of the optimization on your site and basically how it is ranked on the search engines’ result’s pages. 

By understanding the metrics and status of your site, it helps implement the relevant changes. You’ll be able to check your SEO elements throughout the evaluation, including meta-descriptions, titles, headings, and meta-keywords that determine how you should optimize your content over the page for the best results. 

In addition to this, there are a number of other SEO tools on the site to assist you in creating user-friendly and unique content, and since the entire process is so easy to use, even a first-time user will have relative success with it.

ryte keyword density tool

5.Ryte

When it comes to optimizing, analyzing, and monitoring a site, this is another keyword density that is priceless. This software makes use of TF–IDF software just like Website Auditor and suggestS keywords based on the top-ranking competing sites on Google’s search engines. 

The software will also reveal how to best use the keywords to your advantage, apart from the above-mentioned recommendations. So primary phrases will be suggested, and you can update them to achieve success with pre-written content. 

When it comes to issues affecting your performance, the site points out these mistakes and prompts you to fix them. As for performance, you’ll be able to analyze it and receive notifications when changes to performance are made. Consequently, underperforming keywords are flagged, and you are notified so you can take the relevant action. 

Ryte also contains a content success feature that allows you to achieve content success. This will also assist you in creating your content. So you receive comparisons of the competitor’s content and content ideas, and you will be able to monitor performance as well. Ultimately, these are all important factors since users are not only looking for content that is relevant but engaging and able to hold the attention of readers. 

The site has two million users around the world and has played an integral part in helping individuals improve aspects of website usability, conversion rates, and traffic. It’s also a priceless tool to content makers, webmasters, and marketers alike. 

As a bonus, the software is easy to use and therefore ideal for beginners. Although there are paid plans, you have the option to sign up with the free package, which also has some great features, before deciding to opt for the paid packages.

6.SEOlyze

When looking at well-designed content and on-page optimization, SEOlyze is the keyword density tool for you. Ultimately, if the goal is to rank well in the search engines, then this is an efficient and effective tool that still works and helps you achieve your ranking goals. 

Once you register, you are granted access to optimization tools based on Google’s TF – IDF algorithm. So you select a chosen keyword, and this allows you to compare your site with the top 10 competitors for that specific keyword. It also reveals which words need to be used more and provides suggestions and other phrases and keywords that will help you craft useful and interesting content for readers. By providing daily ranking updates, you’ll be able to monitor the keyword ranking success of your keyword strategy on a daily basis. 

So when it comes to helping you keep up with the changes related to your field and your competitors, SEOlyze makes things convenient and simple. It also has a content creation feature that helps to give you enhancement or improvement advice and analyzes your content step-by-step. 

The bonus is that there’s a 30-day free trial, which allows you enough time to decide whether the software is ideal for you.

7.SEO Review Tools

SEO Review Tools is yet another amazing keyword density site. The site contains a variety of useful features, although it may appear to be simple. The software used on the site will help you to effectively and efficiently calculate keyword density in your texts. 

The site also has a PWA testing tool, which allows you to perform automated progressive web app audits with the site’s PWA testing tool. Basically, this tool helps you to see whether your site meets the relevant requirements for PWA when it comes to speed and reliability. It also has a handy Vitals Checker that allows you to carry out a core web’s vitals test to determine whether your website’s user experience is smooth. Ultimately, this allows you to determine if your site is secure, mobile-friendly, and safe for browsing. 

Core web metrics may not have been all the rage in years gone by, but lately, Google is implementing core metrics and has been using them in rankings since 2021. The software is especially recommended for you if you are not too keen on using Google’s keyword planner. While the keyword planner is always a suitable place to start, its primary purpose is for Google ads. 

SEO Review Tools contains a curated content checker that sheds light on a number of factors that relate to keywords, including trends, search volumes, and suggestions that ultimately play a crucial role in how that keyword is going to rank on the search engines. 

Additional tools include a mobile-friendly tool test, domain rank checker, Google SEO checker, website accessibility checker, and website authority checker, which will help your page rank high in the search engines. These tools also help keep track of your competitors and recommend valuable insights that improve your website’s overall performance.

internet marketing ninjas sign

8. Internet Marketing Tools

Internet Marketing Ninjas is another common and useful keyword density checker. Ultimately, it allows you to thoroughly check keyword analysis on any page on your site. The site is also useful in analyzing your competitor’s strategies and content. 

Ultimately, using any keyword density tool to refine your keyword usage and distribution according to Google’s updates is imperative to determine the overall performance and ranking of your website. Internet Marketing Ninjas helps you achieve just that. 

The process is extremely user-friendly and involves you pasting the given URL in the provided box. The site then gives you a detailed report including the number of linked and non-linked words, the total number of words along with several stop words. The most often-used keywords on that page are displayed in the first table. It is broken down by lists of one, two, and three-word phrases in descending order and a usage frequency count for those phrases and words. 

Data containing keyword density for specific non-linked text is displayed in the second table. The top 10 phrases and words are shown in both tables, using the keyword analysis tool. Additional data can be viewed by clicking the show or hide link towards the end of that column. 

9.Text Tools

The Text Tools software is based on a TF-IDF algorithm and is designed to assist in content optimization. Once you insert a target keyword into a given space, Text Tools goes through your content and creates semantically related terms that you can and should use in order to make your content even more relevant. The keyword comparison is made using the top competing websites for that specific keyword. 

10.GeoRanker

If you’re looking for analytics and SERP tracking tools to help your small business with its SEO strategies, GeoRanker is the site for you. 

The keyword density tool from GeoRanker is designed to measure the number of times a specific keyword appears on a web page or piece of text in comparison to the overall word count on that page. 

Two key metrics are reported after the analysis, which is Density and Word Weights. Density reveals the number of times a phrase or keyword is used on a page, while Word Weights reveals how well a web page is optimized for any given keyword or phrase. 

They do offer a free trial and a free keyword density tool as well as paid packages starting at $99 a month. 

11.Visio Spark

Visio Spark helps by analyzing existing texts and web pages that you are working on. So once the analysis is complete, the site will reveal the list of word phrases found in your texts with the frequency and calculated density. Additionally, it reveals the metadata of the web page and shows internal and external links. As a bonus, this tool is free. 

12.SEOBook

SEOBook is one of the most trusted sites on the web currently. So from those who have tried and tested the site, the results seem to be full-proof. After analysis, a complete description of the issues found is revealed. One of the best ways to use this software is to upload your pages or texts and start checking them. Texts can be uploaded in TXT and HTML format making the process that much more straightforward. 

13.SEOCentro

SEOCentro is yet another competent keyword density tool that is easy to use. Simply upload a web page or some text, and it will show you the number of times a specific keyword is used on the page and how many keywords have been used in the overall content. The tool is fast and reliable, so using it is a pleasure. 

14.Keyword Cloud

This is a simple tool yet very effective. It allows you to scan a web page, and, in turn, keywords are returned on the page in a single cloud. The main keywords are depicted in larger fonts at the beginning of the cloud, and secondary keywords appear in small fonts in the cloud. The tool is useful and always worth remembering for your keyword density needs.

sure oak sign

15.SureOak

SureOak is a free keyword density checker that allows you to check the keyword usage of existing texts and web pages on a website to optimize it for SEO. Simply enter the web page URL, and the tool will provide you with a list of the most-frequently-used words on the page, the total number of keywords found on the selected page, and the density of those keywords in percentages. 

Keyword density should be between 1%-3% according to the relevant metrics, and if your keyword density is within these limits, the tool will show a green color. Ultimately, this tool can help you compare your content to your competitors and determine whether your target keyword is used most often on that web page. 

Conclusion

If you want to compete with the top-ranking websites in your niche, then you will need to create longer-form content and higher-quality pieces. Consequently, you can include a higher number of keywords in your texts. Keyword density plays a huge role in how well your page or site ranks in the SERPs, so take note of the list of keyword density tools mentioned above and make use of them to ensure that your content is king.

Shawn Manaher

Shawn Manaher is the founder and CEO of The Content Authority. He's one part content manager, one part writing ninja organizer, and two parts leader of top content creators. You don't even want to know what he calls pancakes.

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