What is keyword cannibalization?
Keyword cannibalization is when two or more pages on one website are built for the same search and the same intent, so they compete with each other and split the links and visitors one page could have collected.
Cited from the66th.com/glossary/keyword-cannibalization
How keyword cannibalization works
A plumber in Calgary has a drain cleaning service page. Later it publishes a blog post called "Drain cleaning in Calgary" and a second service page that says much the same. All three answer one search for one buyer. The one that shows up in the results can be the blog post instead of the page that takes bookings. Links from other sites land on all three, so no single page collects them.
Shared words alone are not the problem. Two pages can mention drain cleaning and serve different intents, the goal behind a search: one explains, one sells.
| The two pages | Same intent? | What to do |
|---|---|---|
| /drain-cleaning/ and /blog/drain-cleaning-calgary/, both written for "drain cleaning Calgary" | Yes. Both are for a buyer ready to book. | Merge them into one page and redirect the other address to it. |
| /drain-cleaning/ and /blog/why-drains-clog/ | No. One sells, one explains. | Keep both and link the guide to the service page. |
| /drain-cleaning/ and /blog/drain-cleaning-cost/ | No. One takes the booking, one answers the price question. | Keep both and link them to each other. |
Why Google cares
Keyword cannibalization is an SEO industry term. Google's guidance covers the same problem under duplicate and similar pages. Its SEO starter guide says duplicate content is not a spam violation but can be a bad user experience, and that search engines choose a single URL to show per piece of content.
Google's page on specifying a canonical URL explains how to consolidate the signals of duplicate or very similar pages into one preferred address, and recommends a permanent redirect when you retire a duplicate page. At the far end, Google's doorway abuse policy covers pages created to rank for specific, similar searches, including substantially similar pages.
What it means for your business
Cannibalization shows up as two of your own addresses taking turns in Google for one search, or a blog post appearing where the service page belongs. It builds up on sites that have published for years without a plan, and on stores where product variants and filters create near-copies of the same page.
The fix is a decision about which page owns each search, made before anything new is written. That decision is the core of our keyword research.
Common mistakes
- Deleting one of the competing pages and leaving a dead address. Redirect it permanently (a 301 redirect) to the page you keep, so its visitors and links carry over.
- Treating every shared word as a conflict. Search both keywords and compare the results; when different pages rank, the intents differ and two pages are right.
- Writing a new post for each variation of a service search. Variations with the same intent belong on one page.
- Merging pages without updating internal links. Point every link at the page you kept, so readers and Google skip the redirect.
Related terms
Sources: Google Search Central, Search Engine Optimization (SEO) Starter Guide, 10 December 2025; Google Search Central, How to specify a canonical URL with rel="canonical" and other methods, 10 July 2026; Google Search Central, Spam policies for Google web search: doorway abuse, 28 August 2026.