Keyword cannibalization: when your own posts compete
Two pages aimed at one search split your signals and confuse Google. How to spot keyword cannibalization in Search Console, and fix it by merging or re-aiming.
Keyword cannibalization happens slowly. A post from last year answers a question; this year a new post answers the same question in a slightly different way. Now Google has two of your pages for one search and has to choose, and the choice can flip from week to week.
How to spot it
- In Search Console, open Performance and add a query filter.
- Open the Pages tab for that query.
- If two or more of your pages share the impressions, and their positions trade places over time, they are competing.
Three fixes
| Situation | Fix |
|---|---|
| Two posts say the same thing | Merge into one, redirect the other to it |
| Two posts, different angles, same main search | Re-aim one at its own, more specific search |
| A guide and a product page | Usually fine; link between them |
Merging well
- Keep the URL that performs better.
- Move the best parts of the other post into it.
- Redirect the old URL with a permanent redirect.
- Update internal links to point at the survivor directly.
When the fix is a new target
Sometimes the two posts are both worth keeping because they serve different readers: one for beginners, one for people troubleshooting. Then give the second a more specific search of its own, change its title and opening to match, and link the two to each other so each reader can find the other post.
Preventing it
Keep a list of every post and the one search it targets, and check the list before writing a new one. This blog keeps that list as a plan file, and a build check refuses a post whose main search is already taken. The planning side is in keyword research for a new site.
SEO Blog Writer keeps the same kind of plan in your project and refuses to plan two posts for the same search, so cannibalization is prevented rather than cleaned up.
Questions
What is keyword cannibalization?
Two or more pages on your site targeting the same search, so they compete with each other. Often neither ranks as well as one combined page would.
How do I find it?
In Search Console's Performance report, filter by a query and look at the Pages tab. Several of your pages swapping places for one query is the classic sign.
Is it always a problem?
No. Two pages can rank for one search when they serve different intents, such as a guide and a product page. It is a problem when they say the same thing.