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What are LSI Keywords?

by | 28 Jun, 2022

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LSI (Latent Semantic Indexing) keywords are simply phrases related to the target keyword in your search engine.

For example, if we take the main keyword “marketing”, some common LSI keywords would be “online marketing”, “social media marketing”, “email marketing”, etc.

An LSI keyword is often found on other websites which can help to promote your content and offer extra context to make it easier for visitors as well as search engines to understand what you’re talking about.

How to Use LSI Keywords in SEO?

There are a few ways you can use LSI keywords (Latent Semantic Indexing) in your SEO strategy:

1. Include LSI keywords in your content

Make sure to include LSI keywords throughout your content, such as in the title, in the body, and in the headings and subheadings.

This will help other search engines better understand what your page is about and rank it accordingly.

2. Use LSI keywords in your meta tags

Include LSI keywords in your meta tags, such as the title tag and meta description. This will help search engines understand what your page is about and show it in the search results.

3. Use LSI keywords in your alt tags

Make sure to use LSI keywords in your alt tags for images. Google image tags will help search engines understand what the images are about and index them accordingly.

Image alt text is an important ranking factor for Google Images.

4. Use LSI keywords in your anchor text

When linking to other pages on your web page, use LSI keywords in the anchor text. This will help search engines understand what the pages are about and how they’re related to each other, improving search results.

Are LSI Keywords The Same As Synonyms?

Some Latent Semantic Indexing keywords are synonyms, but not all synonyms are LSI keywords. The majority of LSI keywords are words and phrases that are closely connected to your core term.

So, adding related keywords and using synonyms in your articles can help improve the on-page SEO of your article, but they aren’t LSI keywords.

Do I Need to Use LSI Keywords?

LSI keywords are not required for every web page, but they can be helpful in certain situations.

If you’re struggling to rank for a certain keyword, using LSI keywords in your content may help give your page a boost. Additionally, if you want to target multiple keywords with a single page, using LSI keywords can be helpful in achieving that goal.

Finally, if you’re trying to rank for a keyword that is very competitive, using LSI keywords may help you to rank higher.

The Impact of LSI keywords on SEO

Google’s crawlers, often known as “spiders,” would automatically detect and scan websites when they crawled from one link to the next on linked web pages in the early days.

They’d check the keywords on a page while they crawled to help them determine what it was about. The problem was that some webmasters would stuff their pages with keywords in an attempt to game the system and rank higher. This led to a lot of low-quality, keyword-stuffed content that didn’t provide any real value to readers.

To combat this, Google developed Latent Semantic Indexing (LSI). LSI is a way of understanding the relationships between words and concepts on a page. It looks at the context of the words on a page to determine the meaning, rather than just looking at the individual words themselves.

This helps Google to better understand the content on a page and match it with the searcher’s queries.

How Do I Find LSI Keywords?

There are a few different ways you can find (Latent Semantic Indexing) LSI keywords:

1. Use A Keyword Research Tool

There are a number of different keyword research SEO tools available, such as Google Keyword Planner, SEMrush, and Ahrefs.

These tools will help you with finding LSI keywords that are related to your main keyword.

2. Look At Related Searches

When you search for a certain term on Google, you’ll see a list of related searches at the bottom of the page. These related searches from the keyword research process can be used as LSI keywords in your content.

3. Check Out Competitor Websites

Take a look at websites that are ranking well for the keyword you’re targeting. Chances are, they’re using LSI keywords in their content which is helping them to rank.

You can use the same LSI keywords in your content to help you rank higher.

4. Use A Tool Like LSI Graph

LSI (Latent Semantic Indexing) Graph is a free tool that helps you to find LSI keywords. Simply enter a keyword into the tool and it will generate a list of related LSI keywords for search queries.

5. Google Search Suggestions

When you start typing a keyword into Google, you’ll see a list of suggested keywords. These suggested keywords can be used as LSI keywords in your content.

No matter what method you use to find LSI keywords, make sure that they’re relevant to your topic and target audience for better search engine visibility.

Including irrelevant LSI keywords in your content will not only fail to help you rank higher, but it will also turn off your readers.

What Are The Benefits Of Using LSI Keywords?

To better understand user intent, Google has improved its algorithm by looking at contextually related words to the main keyword. Incorporating LSI keywords into your content might result in some benefits for your SEO, such as:

  • They improve the ranking of your web page in search engines: Search engines use Latent Semantic Indexing keywords to comprehend your page and increase the power of its ranking.
  • Adding semantically related keywords to your content can help improve its relevance: keyword overload is avoided by using relevant phrases.
  • LSI keywords, on the other hand, allow you to give a better search experience for people and thus improve various ranking criteria like time spent on a page, bounce rate, and more.


Google’s artificial intelligence and machine learning have made enormous progress. In fact, it’s frightening how intelligent Google has become!

The search engine is utilizing more LSI keywords to determine the context of any piece of content, which is why it’s important to understand how to make use of these terms in your SEO strategy and content marketing campaigns.

Hopefully, this post has provided you with all the information you need about what LSI keywords are, how they’re used, and how to find them in order to improve your online presence.

It’s now time for you to act. Using the ideas you’ve learned in this post, find a piece of content on your website that you can rework and enhance.

Mihael D. Cacic
“Digital Marketing Mad Scientist”

Physicist turned SEO Content Marketer. For the past few years, Mihael worked with many big SaaS and service businesses helping them rank higher and get more customers. Now here to share his secrets on how to make hyper-profitable blogs in hyper-efficient ways.

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