- 30-07-2025
- You can read this text in 7 minutes
What is keyword cannibalization and how to avoid it?
You're creating more and more content, expanding your blog, adding offer pages, updating categories in your store... and yet you're seeing your rankings drop or not seeing the increases you were hoping for? The problem may lie in a phenomenon that sounds like black magic to many content creators: keyword cannibalization.
The good news? It can be dealt with. But first, you need to understand what cannibalization is all about.
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What does keyword cannibalization really mean?
Let’s start simple. Keyword cannibalization is when more than one page on your website competes for the same keyword phrase in Google. In short, you’re stealing your own traffic.
Google doesn’t know which of your pages to show the user. Sometimes it shows one, sometimes another, and sometimes neither. This signals to the algorithm that you don’t have a single, specific answer to the user’s query. And that can be a problem.
A simple example:
You have a gardening blog. You write separate articles about:
- “How to plant tomatoes on a balcony”
- and “Growing tomatoes in pots”
They’re two different topics, but they both target the same search intent. Google can get confused. Instead of pushing one great article high, it juggles them or shows both in low positions. This is exactly what we want to avoid.
Why does cannibalization harm SEO?
For a user, this isn’t a big deal – they’ll see one of your posts and maybe get something out of it. But for Google? It’s a sign that your website isn’t clear. And if something is unclear, the algorithm doesn’t take any chances.
Here’s what can happen:
- Google alternates between your various pages – none of them gains a stable position.
- CTR (i.e., click-through rate) drops because the title is less relevant to the search query.
- Links pointing to these pages are spread across several locations instead of strengthening one specific page.
- Users end up on the wrong page you should be promoting.
How do you know if you have a cannibalization problem?
This is best after fluctuating Google rankings. If you see page A and page B appearing for a given phrase once a week, that’s a red flag.
You can check this in several ways:
- In Google Search Console, go to the performance report and see how many different URLs are appearing for the same phrase.
- In SEO tools like Senuto, Semstorm, Ahrefs, and Surfer, which will show you which pages rank for the same keywords.
Simply enter the phrase in Google and see which of your pages are showing up (and whether it changes every few days).
What most often leads to cannibalization?
It’s usually a side effect of doing things out of kindness. You create a lot of content because you want to help users. But in the process:
- You write several blog posts on the same topic, just with a slight twist.
- You have several offer pages with very similar content and keywords.
- You assume that more content is better – and you forget about keyword research.
- You create separate product pages that don’t differ significantly enough.
How to avoid keyword cannibalization?
1. Plan your content structure in advance
Before you start writing new articles, make a list of keywords you want to cover. Assign one specific URL to each keyword. And stick to it.
If you have a post on “how to choose hiking boots,” don’t write “best hiking boots” as a separate piece of content—just update and expand the first one.
2. Don’t be afraid to combine content
If you have two similar posts that are competing with each other, consider combining them into one, better article. Create a 301 redirect from the weaker text to the remaining content. This will strengthen the signals and give Google a clear message: “This is the right page.”
3. Use different keywords and intents
Changing one word isn’t enough. The phrases “sushi Warsaw” and “where to eat good sushi in Warsaw” can be treated as different, but only if the texts actually answer different questions. Be mindful of different user intents – one wants a restaurant, another a recipe.
4. Optimize internal linking
Use internal links to indicate which page is most important. Link from your blog to a subpage offering a specific keyword. This will give Google a clear signal about which URLs are more important.
5. Monitor regularly
It’s not like you’ll check once and forget about it. Content lives and changes. It’s worth reviewing your website quarterly to check for keywords and their distribution. Prevention is better than remediation.
Is cannibalization always a bad thing?
Not always. Sometimes Google intentionally shows more than one result on a single page—for example, if you have two strong pages that address different aspects of a question. But these are exceptions. In most cases, it’s better for Google to know exactly which text you want to promote.
❗ Worth remembering!
Cannibalization most often occurs between content that is very similar. Before writing a new article or creating a new page, check to see if your site already has content on a similar topic. Sometimes it’s better to update an old post than to create a new one.
Keyword cannibalization is a silent SEO killer. It doesn't hurt immediately, but it can effectively hinder your search engine visibility. Fortunately, it can be counteracted – you just need to plan your content wisely, analyze your results, and clean up your site from time to time. If you notice that your content isn't growing despite regular posting, check whether you're competing with yourself. Because sometimes the toughest opponent isn't the competition… it's your own website.
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