What is keyword cannibalization?

Keyword cannibalization is when your own pages compete for the same or closely overlapping queries. Google may choose a different page from the one you wanted to rank.

Two URLs containing “bike chain” can still answer different questions. Check the queries and ranking pages before changing either URL.

Compare the queries first

List each page’s URL, title and target query. Search both queries using the same country and language, and save the top ten organic URLs for each.

Count the URLs that appear in both lists. Count each URL once, and leave out ads and other result types. If you only have part of either list, mark the comparison incomplete.

What shared results tell you

If two queries return many of the same URLs, one page may be able to target both. If the ranking URLs differ, you have a reason to investigate separate pages.

For example, if five of the top ten URLs are shared, the overlap is 50%. Treat substantial overlap as a reason to check further, rather than as a Google penalty rule.

Check which of your pages appears

In Search Console’s Performance report, filter by the query and open the Pages tab. Check which of your URLs receives impressions and clicks.

Repeat for the other query. Does the page you wanted appear? Do two URLs take turns ranking? Are relevant organic clicks growing or falling?

Changing URLs in the results doesn’t prove harm by itself. Check the rankings and clicks over time before deciding to merge anything.

Why a large site may leave a niche gap

A high-authority site can’t freely publish a separate page for every low-competition variation. It may already have a page earning traffic from a broader, higher-volume query. A new niche page can also match that broad query, leaving two of its pages competing for the same searches.

For example, an established “spreadsheet templates” page may overlap with a proposed “volunteer rota spreadsheet template” page. The publisher has valuable existing rankings to protect. It might keep the narrower example on the existing page instead of publishing another URL.

A smaller site without that broad page has a different opportunity. It can investigate the niche query, aim for a top-three or top-five position and start earning organic clicks. This is one way smaller sites can compete in markets with companies as large as Google or Microsoft.

High authority doesn’t prohibit niche publishing. The constraint is overlap with an existing page and the traffic at risk. Compare the actual query results and the site’s ranking URLs before concluding that an incumbent has left a gap.

Decide what to change

If the pages answer different questions, make each URL, title and main heading clear about its own subject. If they answer the same question, consider combining them into one page.

Before combining pages, save their contents, backlinks and search data. Choose which URL to keep and redirect the retired URL to it. Update internal links to point directly to the page you kept.

Shared words alone are a weak reason to merge. Use the actual queries and ranking URLs to guide the decision.