Nayan Dhumal
A focus keyword is the main search phrase you want a page to be found for. SEO plugins like Rank Math use it to check whether your title, description and content clearly match that phrase. This guide explains how to choose one, where to use it and how to avoid overdoing it.
When you install an SEO plugin on WordPress, one of the first boxes you see under a post asks for a “focus keyword”. Many beginners type something random, watch the score change, and move on without knowing what it is for.
Used well, the focus keyword is a simple discipline. It forces you to decide what a post is about before you publish it, and then checks that the post actually says so in the places that matter.
Key takeaways
- The focus keyword is the main phrase you want a page to rank for.
- It is a tool inside your SEO plugin, not something Google reads directly.
- Choose a phrase that real people search and that your page fully answers.
- Use it naturally in the title, URL, description, introduction and a subheading.
- One page should target one main keyword. Do not make two pages compete for the same phrase.
- Do not chase a perfect plugin score at the cost of readable writing.
What a focus keyword is (and is not)
A focus keyword is a note to yourself and your SEO plugin: “This page should be found when people search for this phrase.”
It is not a magic setting. Google does not read the focus keyword box. What Google reads is your page: the title, the headings, the text and how well it answers the search. The plugin simply checks those parts for you and points out gaps.
How to choose a focus keyword
- Start with the reader’s question. What would someone type into Google to find this post?
- Check that people search it. Use Google’s autocomplete and the “People also ask” box to see how people phrase the question.
- Check the intent. Search the phrase and look at the results. If they are all product pages and you wrote a tutorial, pick a different phrase.
- Prefer specific phrases. “How to repot a snake plant” is easier to rank for and more useful than “snake plant”.
- Make sure the page fully answers it. The keyword should describe the whole post, not one paragraph of it.
My guide to keyword research step by step covers this in more detail, including free tools.
Where to use your focus keyword
Rank Math’s own documentation lists the places it checks. These are the main ones:
| Place | What Rank Math checks |
|---|---|
| SEO title | The keyword appears in the first 50 characters |
| Meta description | The keyword appears within the first 120 to 160 characters |
| URL | The keyword appears in the permalink |
| Introduction | The keyword appears in the first 10% of the content |
| Content | The keyword appears in the body of the post |
| Subheadings | The keyword appears in at least one H2 or H3 |
| Image alt text | The keyword appears in the alt text of at least one image |
Treat this as a checklist, not a set of laws. If adding the exact phrase to a subheading makes it read badly, use a close variation instead. Readers come first.
Pro tip
Write the post first, then add the focus keyword in the plugin and look at the checks. In most good posts, the keyword already appears in the title, introduction and a subheading without any effort, because you were writing about that topic. Only adjust what is genuinely missing.
How often should the keyword appear?
Rank Math suggests a keyword density of about 1% to 1.5% for a full score and warns when density goes above 2.5%. In plain terms, that is roughly one mention every 100 words at most.
Do not count words while writing. If the post is clearly about the topic, the keyword and its variations will appear naturally. If you have to force it in, the sentence will sound strange to a reader, and that costs you more than a lower plugin score.
One page, one main keyword
Every important page on your blog should have its own main keyword. When two posts target the same phrase, they compete with each other and Google has to guess which one to show. This is often called keyword cannibalisation.
Before you write a new post, search your own site for the topic. If you already have a post on it, update that post instead of writing a second one. If the new post covers a different angle, give it a clearly different focus keyword.
Secondary keywords
Many posts naturally answer related searches as well. A guide to repotting a snake plant might also be found for “snake plant pot size” or “when to repot a snake plant”. These are secondary keywords.
Rank Math lets you add more than one focus keyword. Use the main phrase first, then add one or two close variations if they genuinely fit the post. Do not add unrelated keywords just to fill the box.
Common mistakes
- Choosing a phrase nobody searches. A clever phrase you invented will not bring visitors.
- Choosing a phrase that is too broad. “Blogging” or “SEO” alone are almost impossible for a new site.
- Ignoring intent. The right words with the wrong type of page will not rank.
- Keyword stuffing. Repeating the phrase makes the post harder to read and looks spammy.
- Chasing a score of 100. The plugin score is a guide. A helpful post with a score of 80 beats a robotic one with 100.
How to check if it is working
Once your post is indexed, open the Performance report in Search Console and filter by the page. The “Queries” tab shows which searches it appears for. If the main searches match your focus keyword, you chose well. If they are different, consider whether the page should target those searches instead.
If you are new to Search Console, start with my beginner’s guide. For writing the description that appears in search results, see how to write a meta description.
Frequently asked questions
Does Google use the focus keyword setting?
No. The focus keyword is a setting inside your SEO plugin. Google reads your actual page content, title and headings.
Can I use the same focus keyword on two posts?
It is better not to. Two posts targeting the same phrase compete with each other. Update the existing post or choose a clearly different angle.
How many times should I use my focus keyword?
Use it naturally. Rank Math suggests about 1% to 1.5% density and warns above 2.5%, but readability matters more than the number.
Should the focus keyword be in the URL?
It helps keep the URL short and descriptive, and Rank Math checks for it. Set the URL before publishing, because changing it later needs a redirect.
What if my focus keyword sounds awkward in a sentence?
Use a natural variation. Write for the reader first and let the plugin score be slightly lower.