What does the Premium analysis do?

Yoast SEO Premium helps you write more naturally. One of the features is the possibility to optimize your posts for related keyphrases and synonyms. And, what’s more, it will also recognize different word forms of the words of your keyphrase. It helps you to easily write better copy for your audience and search engines!

Write even better copy for readers and SEO

  • Optimize your text for related keyphrases and synonyms
  • Write naturally; it recognizes different word forms
  • Find out if you've distributed your keyphrase well

Unlock these features in Yoast SEO Premium

Get the premium content analysis and much more for your WordPress site with the Yoast SEO Premium plugin!

Get Yoast SEO Premium Only $89 USD (ex VAT) for 1 site

If you want a post to rank for a certain keyword or phrase you have to optimize your content for that keyphrase. This focus keyphrase can be one word, but it’s more likely to be a phrase or part of a sentence. When optimizing your content for that focus keyphrase, our Yoast SEO plugin is a great help. It runs a check on your content to find out if you’re using your focus keyphrase enough – but not too much – and in the right spots. It does so in real time, so you can optimize your text while you’re writing!

Sometimes it’s hard to choose one keyphrase, because you want a post not only to rank for thát focus keyphrase, but also for a slightly different, but related keyphrase. Since Google has been getting better at recognizing relationships between topics, it’s smart to optimize your post for relevant, related keyphrases.

Luckily, our features can help you out. In partnership with SEMrush, we let you find and add high-performing related keyphrases. Or, if you prefer, you can manually add up to four related keyphrases to the Yoast SEO analysis. The related keyphrases you add get a slightly different treatment than your focus keyword, as they’re not the main keyphrase you’re optimizing for. Our assessment is less strict, so it’s easier to get a green bullet for your related keyphrase.

We are aware of how hard keyword research can be. So we created a tool to help you out. It lets you find relevant keyphrases right within the WordPress editor! To use it, you will need to create a Semrush account and link it with Yost SEO in a few easy steps.

Then, the fun part starts. After you connect the accounts, you will get access to the related keyphrase suggestions. The data also includes metrics like search volumes and trends, which can help you decide which keyphrase to use. When you find one that can fit your post, just click the “Add as a related keyphrase” button, and it will automatically be added to the SEO analysis.

The SEMrush related keyphrases overlay window
Related keyphrases modal

Just click on “Add related keyphrase” in the Yoast SEO Premium meta box or sidebar to add a new keyphrase. It will unfold and you can enter the keyphrase in the related keyphrase input field. It will run a check and you can find your score next to your focus keyphrase.


If you want to write an article that is nice and easy to read, you’ll probably use synonyms of your focus keyword throughout your text. That’s excellent, because repeating your exact focus keyphrase often impairs readability. Using synonyms is a way to help users understand your copy better and search engines will recognize these synonyms too. They’ll understand your text is still on topic!

For instance, if you want to optimize for [dog game], you could, and probably will, use [dog sport] as a synonym now and then. This will make your text a much nicer read!

In Yoast SEO Premium you can add these synonyms of your focus keyphrase, and we’ll be able to see if you’ve used those synonyms in, for instance, your meta description, introduction, subheadings or image alt text. Moreover, our keyphrase distribution check will reward you for alternately using your keyphrase, and it’s synonyms throughout your text.

How do you add synonyms?

Adding synonyms is easy! Just enter them in the field below your related Keyphrase!

Word form recognition

If you write in one of our supported languages, you’ll love this feature! Yoast SEO Premium recognizes different word forms of your keyphrase. We currently support English, German Dutch, French, Italian, Portuguese, Russian, Polish, Swedish, Hungarian, Indonesian, Arabic, Hebrew, Norwegian, Turkish, Czech and Spanish and are working hard on adding more languages. This means the plugin will recognize singular and plurals, but also different tenses of verbs. This is awesome because it will allow you to write in a natural and free way and get green bullets too!

So, if your focus keyphrase is [dog game], it will recognize Read about these games for dogs too. Or, if you want to optimize for [play flyball] it will recognize the sentence, I love playing flyball with my dog as well.

This infographic summarizes the entire concept of synonyms, related keywords and word forms:

Yoast SEO word forms infographics

Keyphrase distribution

Word forms and synonym recognition all come together in one awesome feature: Keyphrase distribution. This premium-only check goes through your copy and assesses where you’ve used your keyphrase, its synonyms, or different words forms from the words in your keyphrase. If you get a green bullet, you’ve stayed on topic and probably found a nice balance in using all of those words. The best way to make your readers and Google happy!

With the highlight function you can check where you’ve used the words that are important for your optimization. Look at this example from a text optimized for [puppy training] with the synonym [obedience classes]:

keyword distribution

Pretty nifty right? And you can have this too! Check out if this Premium analysis is available for your language.

Unlock these features in Yoast SEO Premium

Get the premium content analysis and much more for your WordPress site with the Yoast SEO Premium plugin!

Get Yoast SEO Premium Only $89 USD (ex VAT) for 1 site

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