Keyword Cannibalisation
SEOAlso: Keyword Cannibalization · Content Cannibalisation
Quick definition
Keyword cannibalisation happens when two or more pages on the same website target the same search query. Instead of one strong page ranking well, Google splits its confidence across multiple pages, and often none of them ranks as high as a single consolidated page would.
How it varies across Australia
Cannibalisation shows up most in Australian content sites with long publishing histories and multiple writers working without a shared keyword map. The pattern is consistent: older evergreen posts and newer refreshed posts competing for the same query, with neither one winning cleanly.
See content and technical SEO scores across Australian industries →What it actually means
Imagine sending two employees to pitch the same client on the same day, both representing your business, both saying slightly different things. The client doesn't know which one to trust, so they trust neither fully. That's keyword cannibalisation. Two pages on your site are pitching Google the same search query, and Google can't work out which one deserves to win.
It usually isn't intentional. A blog gets a new post about a topic that an older post already covers. A product page and a category page both target the same commercial term. A landing page built for a paid campaign overlaps with an organic page that's already ranking. None of these pages are doing anything wrong individually. The problem is they exist together, unmanaged.
The result is rarely a total ranking wipeout. It's subtler than that. Rankings fluctuate between the competing pages week to week. Neither page accumulates the backlinks, internal links or engagement signals it needs to climb. Click-through rate suffers because search intent doesn't match cleanly to either result. It's death by a thousand small inefficiencies, not one dramatic penalty.
Cannibalisation isn't Google punishing you. It's Google being genuinely confused about which of your own pages you actually want to win.
How it shows up
The clearest signal is in Search Console, under the Performance report, filtered by query. If a single query shows impressions split across two or more of your own URLs, and neither URL holds a consistently strong position, that's cannibalisation in progress. It also shows up as ranking volatility, where a page seems to swap places in the results with another page from the same domain week to week. A quick site search operator (site:yourdomain.com "target phrase") is a fast manual check for obvious overlap.
The Australian context
Australian SEO teams that publish across multiple states or service areas often create cannibalisation without realising it. A generic service page and a location-specific page for Melbourne or Perth can end up targeting near-identical search intent if the location page isn't genuinely differentiated with local content. The fix there is usually adding real local specificity, not deleting the page.
Where people get this wrong
Related terms
Common questions
How do I find keyword cannibalisation on my site?
Open Search Console, go to the Performance report, and filter by a query you care about. If impressions are split across two or more of your own URLs with neither holding a stable position, you've found it. A site search for your target phrase is a fast manual backup check.
Should I delete one of the competing pages?
Not automatically. Check which page holds more backlinks and stronger engagement first. Usually redirecting the weaker page into the stronger one, or clearly differentiating both by search intent, works better than deleting one outright and losing its accumulated authority.
Can cannibalisation happen between a blog post and a product page?
Yes, and it's common. A blog post written to answer a question can accidentally target the same commercial query as the product page meant to convert. When that happens, decide which page should own the commercial intent and adjust the other to target a genuinely different angle.
Does cannibalisation cause a Google penalty?
No. There's no penalty in the punitive sense. It's a self-inflicted inefficiency where your own pages compete against each other instead of against competitors. The cost is weaker rankings for everyone involved, not a manual action or algorithmic demotion.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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