What Is Keyword Cannibalization?

Keyword cannibalization is when two or more pages on your website are trying to rank for the same search. Think of it as sibling rivalry for your website. Two pages fighting over the front seat, and sometimes Google makes them both sit in the back. Google only wants to show the page that best answers that search, so when several of yours look like a reasonable answer, it has to decide between them, and they end up competing with each other.

It comes up in almost every site audit we do, and most business owners have no idea it’s happening. It’s not a penalty and nothing’s broken, so there’s no warning light. You just notice that a page you’ve put real work into never quite gets where it should.

What it looks like on a real site

Say you run a landscaping company in Nanaimo. Over the years you’ve added a “Landscaping Services” page, a “Landscape Design” page, a “Nanaimo Landscaping” page, and a couple of blog posts about planning a backyard. They might all have different titles, but if they’re all covering landscaping in Nanaimo in a similar way, they’re all a possible answer to the same search.

From Google’s side, that’s five pages that could each answer “landscaping Nanaimo,” and none of them is clearly the best one. So it might show your blog post one week and your design page the next, and none of them build up enough strength to sit near the top.

Sometimes it’s even simpler than that. On one real estate site we worked on, there was a “Salt Spring” page and a “Salt Spring Island” page, built separately because people search both. They were basically the same page twice, so the fix was to keep one and redirect the other.

What’s going on behind the scenes

Google ranks pages, not websites. For every search, it looks at all the pages that could answer it and weighs things like how well the content matches the search, how many other sites link to that page, and how people respond when they land there. Each page earns those signals on its own. So when you have three pages covering the same thing, the links, clicks and relevance that could have gone to one page get spread across three.

AI tools work in a similar way. When someone asks ChatGPT or Google’s AI Mode a question, the tool searches for pages that match, pulls out the sections that answer it most directly, and cites those. If your answer is split across a few overlapping pages, there’s no single clear source to pull from, so it may cite a weaker page, or a competitor whose one page covers the topic more completely.

If you’d like the longer version, Google has a good plain-language explanation of how Search works.

Why it matters

The impact usually shows up in a few ways:

• Your rankings bounce around. If Google keeps switching which page it shows for a search, neither page holds its position for long.
• The wrong page ranks. A blog post might show up for “landscaping Nanaimo” when your service page, the one with the quote form, is the page you actually want people landing on.
• Your strength gets split. Links, clicks and content are spread across several pages, when one page could have all of it.
• You’re spending time and money twice. Every page you write or update for the same search is effort that could have gone into one better page.
• AI tools can pick the wrong page too. They may also skip your site for a competitor with one clearer answer.

None of this means your site will tank overnight. It’s more of a slow leak. But fixing it is usually one of the quicker wins we find, because the content already exists and just needs sorting out.

How to tell if it’s happening on your site

The easiest place to check is Google Search Console, which is free:

1. Go to Performance, then Search results.
2. Click + Add filter, choose Query, and enter a search you care about (like “landscaping nanaimo”).
3. Click the Pages tab.

If you see several of your pages getting impressions for that one search, that’s a sign they’re competing. It’s even clearer if you change the date range and the top page keeps changing.

You can also just do a quick gut check. Make a list of your main pages and write down, in a few words, what each one is for. If two of them have the same answer, you’ve probably found one.

How to fix it

There are a few ways to go, depending on what the pages are doing:

1. Merge them. If two pages really cover the same thing, combine the best of both into one page and set up a 301 redirect from the old one. Anyone who had the old link, including Google, gets sent to the new page.
2. Give each page its own job. If the pages are actually different, make that obvious. “Landscape Design” and “Lawn Care” are different services, so each page’s title, headings and content should be clearly about that one thing.
3. Point your internal links at the right page. If you want your service page to rank for “landscaping Nanaimo,” your blog posts should link to it using that kind of wording, rather than to each other.
4. Change the target on the blog post. Blog posts are great for questions (like “how much does a backyard redesign cost?”) and less great for “hire me” searches. Shifting the post toward the question lets your service page own the service search.
5. Remove or noindex thin pages. Old pages that don’t get traffic and don’t add anything can often just be redirected or kept out of search results.

I’d usually start with merging or redirecting, because it’s the clearest signal you can send. Two half-strong pages almost always do worse than one good one.

How to avoid it in the first place

The simplest habit is to decide what a page is for before you build it. Every page should answer one specific search, and you should be able to say what someone typed to land there.

A few things that help:

• Keep a simple list of your pages and the main search each one targets. Before adding a new page, check it isn’t already covered.
• Write page titles that are specific to each page. If you’re reusing the same title formula across a lot of pages, our post on how to write SEO page titles goes through how to keep them distinct.
• Think about where the visitor is at. Someone ready to hire wants a service page, and someone still figuring things out wants a guide or a blog post. A neighbourhood guide and a listings page for the same area can live side by side as long as each one is answering a different question.
• When you have a new idea for a post, check whether you could update an existing page instead.

FAQ

Not sure if your pages are competing?

Cannibalization is something we check in every site audit, and it’s often one of the first things we fix. If you’d like us to take a look at your site, have a look at our ongoing SEO services or reach out through our intake form!