Keyword cannibalisation occurs when two or more pages on your site target the same keyword or compete for the same search query. Instead of one strong page dominating the rankings for that term, you have multiple weaker pages splitting the authority, confusing Google about which one to rank, and often resulting in lower positions for all of them than a single well-optimised page would achieve.
It is a surprisingly common problem, especially on sites that have published content regularly over several years without a clear content strategy.
Why Cannibalisation Hurts Rankings
When multiple pages on your site target the same keyword, several negative effects occur simultaneously:
Split link equity. Any backlinks pointing to your site for that topic are distributed across multiple competing pages rather than concentrated on one. As we covered in our guide to link equity, a single page with all the backlinks will outrank multiple pages splitting them.
Google indecision. When Google crawls multiple pages on your site targeting the same query, it must decide which one to rank. It may pick the wrong one — ranking an older, weaker page instead of your best, most comprehensive article on the topic.
Diluted internal linking. Your internal links may be pointing to different pages for the same topic, further fragmenting the authority that should be concentrated on one definitive page.
Reduced click-through rates. If two of your pages appear in the same SERP for a query, searchers see your brand twice but may perceive this as spam or simply click the first result without noticing you dominate two positions.
How to Find Keyword Cannibalisation
Google Search Console. Go to Performance → Search Results and filter by a specific query. If multiple URLs appear with impressions for the same query, you have cannibalisation. Look for cases where two pages share positions for the same terms.
Google site: search. Search site:yoursite.com "your target keyword". If multiple pages appear, they are competing for that term.
Content audit. Review your content inventory and look for articles with overlapping topics. Two articles — "How to Build Backlinks" and "Backlink Building Guide for Beginners" — likely target the same queries and will cannibalise each other.
How to Fix Keyword Cannibalisation
Consolidate the pages. Merge the content from all competing pages into one comprehensive, definitive article. Redirect the removed pages to the consolidated one using 301 redirects. This concentrates all equity, backlinks, and authority on a single page.
Differentiate the content. If the pages genuinely cover different aspects of a topic and should both exist, optimise each for a distinct, specific keyword with different search intent. An overview page and a detailed technical deep-dive can coexist if they target meaningfully different queries.
Use canonical tags. If one page is the definitive version and another exists for a legitimate secondary purpose, add a canonical tag on the secondary page pointing to the primary. As we covered in our guide to canonical tags, this consolidates the ranking signal without deleting the secondary page.
Update internal links. After consolidating, ensure all internal links across your site point to the definitive page rather than the removed ones. Use our internal link checker to find any remaining links pointing to the old URLs.
Preventing Cannibalisation Going Forward
Maintain a keyword map — a spreadsheet listing every target keyword alongside the URL of the one page designated to rank for it. Before creating any new content, check the keyword map to ensure you are not duplicating an existing page's target.
Summary
Keyword cannibalisation splits authority and confuses Google, reducing rankings for all competing pages. Find it via Search Console, site: searches, and content audits. Fix it by consolidating pages with 301 redirects, differentiating content that genuinely covers different aspects, or using canonical tags. Prevent recurrence with a keyword map that assigns each target term to exactly one page.
Missed the previous article? Read: How to Write SEO Title Tags That Get Clicked