September 27, 2023


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Top 5 LSI Keywords Research Tools


Whenever you do research about SEO techniques, you come across words like ‘LSI keywords’ or ‘LSI keywords research tools’. This article dwells on the concept of LSI keywords and the best free LSI keywords research tools available on the internet.

What is LSI Keywords?

One of the foremost SEO techniques is the use of keywords. Every search engine bases its search on the keyword you type in the search bar. Is this information enough for you to arrive at what you are looking for? The answer should definitely be in the negative. You need to expand your search in order to narrow it down.

Let us consider a simple example. You are looking for information on ‘Orange’. It is natural for you to type out the word ‘orange’ in the search bar. Your basic expectation is that the search will throw out results about the orange fruit. However, you find to your surprise that the search engine has different ideas. For you ‘orange is a fruit’. However, for the search engine, ‘orange’ is a fruit, color, name of a company, name of a place, and many other entities. This is because the computer does not know that you are looking for the orange fruit.

Hence, you need to expand your search by including words that could help the search engine to narrow down its search to the orange fruit. You can add words like ‘fruit, flavor, and juice ’etc to the primary keyword ‘orange’. This use of additional or supplementary keywords is known as Latent Semantic Indexing (LSI) keywords.


How do you use the LSI Keywords?

There are no strict rules on how to use them. It is advisable to use LSI keywords as part of your normal content. You can use them in the title, anchor texts, header tag, or for that matter, anywhere in the content. The main objective is to let the search engine know what your article is trying to convey.

5 Best LSI Keywords Research Tools

You can find many such tools on the internet. Let us look for some of the best free LSI keyword research tools.

We shall start with the easiest ones.

1. Google AutoComplete

This is an inbuilt tool in Google. You type in your primary keyword in the search bar. Google will automatically provide suggestions as you continue typing it out in the search bar. We shall take the same example we had provided earlier. This screenshot should say it all.

This is the most popular LSI keyword research tool in use today.

2. Google Keyword Planner tool

If you are looking for a free LSI keyword research tool, Google Keyword Planner can be the right choice. This is not an automatic tool as the one discussed above. However, it is equally effective and popular. It gives you more information about the keywords such as ‘average monthly searches, competition, and so on.


You need to log in to the Keyword Planner to search for the LSI keywords to add into your content. Using the tool is easy. You have to follow the simple steps the tool may ask you to do. You get your ideas in an instant. The tool segregates the ones that have low competition and those that exhibit greater chances of ranking better on the search engines.

3. LSI Graph

This is one of the simplest and best free keyword research tools. You do not have to do much. Entering the keyword in the search box and clicking on the ‘Generate’ option will give you a list of keywords.

4. Ultimate Keyword Hunter

This is a free LSI keyword generator tool that woks on a standalone basis. This entails that you have to install this tool on your computer. The main objective of this tool is to search for the perfect LSI keywords that you can use in your content.

5. Uber Suggest

Using this tool, you are able to generate all the Google Auto Complete keywords for your primary keyword. Using your keyword as a base, this tool provides its suggestions. This is a powerful LSI keyword research tool.

You have seen the five most popular LSI keyword research tools in use today. One should have an idea about the benefits of using LSI keywords in their content. Let us look at some of them in brief.

Benefits of using LSI keywords

  • Improve SEO ranking: The primary advantage of using LSI keywords is to narrow down your search results. Therefore, the use of LSI keywords in your content can help to improve the overall SEO ranking of your content. Search engines have become smarter today. They use this technique of searching for the Latent Semantic Indexing (LSI) keywords to search for the contents. The intelligent use of the LSI keywords determines the quality of the content.
  • Optimum use of attention span: People today exhibit a very limited attention span. One has to take maximum advantage of the same. The use of LSI keywords can help in maintaining the interest levels of the readers. This ensures that they go through the contents of your blog in detail.
  • Google Penalty Savior: Keyword stuffing can attract Google penalties. In order to avoid such a situation, one can always make use of the LSI keywords. They can help in differentiating the content from spam.
  • Increase relevance of the content: Using the LSI keywords is a great way of making your content unique. This can help in increasing the relevance factor whereby you can aim for higher SERPs. This is one way of staying ahead of the competition.
  • Better for PPC campaigns: Using LSI keywords instead of your primary keywords can strengthen your PPC campaigns a great deal.

Final thoughts

We have just seen the LSI Keyword concept in brief. LSI keywords have great use in making your content look better. It can also help your content to rank higher on the search engines. Therefore, one should make use of the LSI keyword research tools to make the content relevant and meaningful. This can save valuable time for the reader and thus increase the chances of conversion of leads. LSI Keyword research has come to stay in a big way.