10 Best Keyword Density Checker Tools for SEO

This guide includes a list of the best keyword density checkers for SEO.

Below, you’ll find the top keyword density tools you can use to scan the text on a web page to get valuable keyword frequency and percentage data for on-page search engine optimization (SEO) and competitor analysis.

The recommendations on this page contain a variety of keyword density analyzers to help you find the perfect tool for your digital marketing needs. Each option has a unique set of features you can test at no charge.

Best Keyword Density Checker Tools for SEO

Best Keyword Density Checker Tools for SEO

1. WebFX

WebFX offers the best keyword density checker for quick analysis. You can input a published URL or you can copy and paste unpublished content into a text box for density scanning.

What’s also nice about the WebFX tool is that you can choose to include (or omit) the meta tags, page titles, and ALT titles when analyzing keyword density percentages. Once you input your data and click the submit button, you’ll instantly receive a list of one word, two word, three word, and four word keyword phrases along with their frequency value and density percentage.

Price: Free without limitations

2. Internet Marketing Ninjas

Internet Marketing Ninjas is another top keyword density analysis tool to try because it enables you to evaluate your website content to quickly identify a web page’s keyword density and distribution. However, it only accepts a published URL for analysis; not a block of text.

After submitting a URL with this tool, you’ll get the following data in an easy-to-read report: number of total words on the page, number of linked words, number of non-linked words, and number of stop words or very short words used in the non-linked text.

Price: Free without limitations

3. SEO Scout

SEO Scout provides a good keyword density analyzer that includes extra features you won’t find with any of the other tools reviewed on this page. It’s truly a one-of-a-kind tool for checking every aspect of keyword density for SEO, however, SEO Scout only works for analyzing copied and pasted text; there is no input field for a published URL.

As for the top features of SEO Scout, you not only get a detailed list of keyword percentages by one, two, three, and four word phrases, but the tool also includes the number of uses on the page, total word count, readability score, grade level, and sentiment. Additionally, you can filter words in the list, get a list of topics extracted from the page using entity extraction, and see other key factors like average word per sentence, lexical density percentage, and more.

Price: Free without limitation; $49 per month for the full suite of SEO analysis tools

4. Copywritely

The next best keyword density checker is provided by Copywritely, which is SEO content optimization software. With Copywritely, you can quickly check the uniqueness, grammar, readability, and word use percentages to identify keyword stuffing. You can input a URL or copy and paste text for fast analysis.

The only downside to this tool is that after submitting your URL or text for scanning, Copywritely only reports the number of errors in your text; you just sign up for the free trial to get the full report to make corrections. However, Copywritely is an excellent software with various text editing tools to help you create well-optimized, error-free content for SEO.

Price: Free to try; $29 per month

5. Yoast

Yoast is an SEO WordPress plugin that includes one of the most popular keyword density tools on the market. The free version automatically calculates keyword density as you’re writing content and helps you identify when you’re getting off-topic or over-using your target keywords.

The premium version of Yoast also suggests synonyms and related phrases to help you improve the topical depth of your content so it has a better chance of ranking high in Google, Yahoo, and Bing for relevant search queries.

Price: Free with limitations; $99 per year for the Premium plugin

6. Rank Math

Rank Math is also an SEO WordPress plugin that provides an optimization score for your content that analyzes keyword density for the focus keyword you’re targeting on the page. The tool offers sophisticated Artificial Intelligence (AI) to help you easily create natural SEO-friendly content.

Rank Math’s keyword density test will scan your document and identify how often your focus keywords and combinations have been used throughout the content. The major benefit of this plugin is that it searches for both primary and secondary focus keywords to provide you with a more accurate keyword density score for on-page SEO.

Another top feature of Rank Math is that you automatically receive a warning if your content exceeds a keyword density of 2.5%, which means you’re over-optimizing for the focus phrase and entering the realm of keyword stuffing.

Price: Free with limitations; $59 per year for the Pro plan

7. SEO Review Tools

SEO Review Tools offers several free tools for SEO analysis, including a top keyword density checker with three ways to analyze keyword percentages: URL input, text input, and search-based. No other analyzer offers the search-based option, which is what makes SEO Review Tools unique for checking keyword density percentages.

The URL and text input options work like every other tool reviewed on this page, so no further explanation is needed there. As for the search-based feature, it allows you to extract the keyword density based on the top 10 search results in Google to learn from the keyword usage of your competitors. This powerful feature allows you to make better data-driven decisions when optimizing your content because you can match the average keyword frequency of the top-ranking results inside of a single web page.

Price: Free without limitations

8. Sitechecker Pro

Sitechecker Pro has a good keyword density analyzer combined with a set of other powerful SEO analysis tools to help you improve your website’s performance in search engines. However, it does require you to sign up for a free 7-day trial to get the results.

Sitechecker Pro can analyze most web pages in about two minutes and will email you a detailed report of issues that can adversely affect your keyword performance. Your report will include details about your page’s keyword density, links, indexability, content relevance, security, and page speed, with specific suggestions to improve your SEO performance.

With Sitechecker Pro, you’ll also receive alerts when your web pages have critical issues that demand immediate attention and warnings for other problems that should be checked or fixed at your convenience.

Price: Free to try; $49 per month for access to the full suite of SEO tools

9. Small SEO Tools

Small SEO Tools gives you free access to a keyword density checker that offers reports for one, two, three, and four word phrases. You can input a block of unpublished text or a URL to analyze the content.

What’s nice about Small SEO Tools is that you receive a report in both a tabular and tag cloud format. Plus, you can instantly locate keyword phrases that exceed 2% density, which is considered to be over-optimized for SEO.

Price: Free without limitations but includes ads on the page; $0.99 per month for an ad-free experience

10. Georanker

Georanker is another option for a quick and easy-to-use keyword density analysis. However, this tool works differently than the other top recommendations on this page.

In addition to checking density for keywords and phrases, it lets you view the relative weight of your focus keywords to ensure they’re relevant and fully optimized for queries. Additionally, you can adjust multiple factors of this tool to meet your specific requirements. Just click on the Advanced Search option before submitting the URL to gain access to word lengths, weights for each on-page SEO element, and weight multipliers for keyword density analysis.

Price: Free without limitations; $99 per month for the Pro plan which includes 10,000 monthly credits that can be used on Georanker’s other SEO analysis features

Learn More About Keyword Density

The links below explain more about keyword density and how to use it correctly for better search engine optimization. Use these resources to expand your knowledge on the subject.

Keyword Density Checker Tools for SEO Summary

I hope you enjoyed this guide on the best keyword density checkers for SEO.

As you discovered, there are many top keyword density tools to choose between that can help you improve your content and search engine optimization strategy. Feel free to give each of these recommendations a try to find out which keyword density analyzer works best for your needs.

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