What keyword cannibalization is
Keyword cannibalization happens when two or more pages on the same site target the same query. Picture a home improvement blog with "how to paint kitchen cabinets", "painting kitchen cabinets: a beginner's guide" and "best paint for kitchen cabinets", all chasing the same searches. Google has to guess which one to show and often rotates between them. Rankings wobble, clicks are split, and links and authority are spread thin instead of building up one strong page.
The older and larger a content library gets, the more likely this is, because new posts are usually written without anyone checking what already exists on the topic.
How the checker finds it
The tool reads performance data from your Google Search Console and surfaces queries where several of your URLs receive impressions. Because it uses Google's own data rather than guessing from page titles, it reflects what is actually happening in search.
- Create a free account with Google or a Gmail sign-in link. No credit card needed.
- Connect Google Search Console. Access is read-only, so nothing in your account can be changed.
- Choose the property you want to analyze.
- Review the list of queries, each with the pages competing for it.
Reading the report
For each query you see every competing URL with its clicks, impressions, average position and share. Some patterns to look for:
- One page takes nearly all the clicks while another picks up the odd impression. Usually harmless; just keep an eye on it.
- Two pages split impressions evenly and both sit around positions 8 to 20. Classic cannibalization: they are holding each other back.
- A category page and a blog post fight over a buying query. Let the category page lead and have the post support it with an internal link.
Fixing it
Merge when two articles cover essentially the same ground: fold the best parts into the stronger URL and 301 redirect the weaker one. Redirect outdated pages that add nothing unique, so their links pass to the main page. Re-target when both pages deserve to exist: change one page's title, H1 and focus to a different intent, for example turning a duplicate guide into "how long does cabinet paint take to dry".
To keep it from coming back, plan content in clusters. The keyword grouper helps you assign exactly one target page per group. After a cleanup, watch how the surviving page performs with the content decay checker.
When it is not a problem
Not every query with two URLs needs action. For broad queries Google sometimes shows two pages from one site near the top on purpose, and that is extra real estate, not a loss. Focus on queries with commercial value where positions are unstable or stuck on page two. You can find related utilities in our SEO tools.
Frequently asked questions
How do I know if my site has keyword cannibalization?
Typical signs are several of your URLs earning impressions for the same query, unstable rankings, and Google switching which page it shows. The checker pulls these queries straight from your Search Console data.
Do I need Google Search Console?
Yes. The tool relies on real performance data from Search Console. Connecting is free with an account and only grants read-only access.
Is it safe to connect Search Console?
The connection is read-only, so the tool cannot change settings, remove data or submit anything on your behalf.
Should I merge pages or redirect them?
If the weaker page has useful content, merge it into the stronger page and add a 301 redirect. If it is outdated with nothing worth keeping, simply redirect. If the pages serve different intents, re-target one of them.
Is it bad if two of my pages rank for one keyword?
Not always. If both rank high and earn clicks, you occupy more of the results page. Act only when they drag each other down.