Keyword cannibalization is the SEO phenomenon where multiple pages on the same site compete for the same query. Google cannot determine which page to rank — so it ranks neither well. On a catalog with variants or similar products, this is a systematic risk.
The three main types of e-commerce cannibalization
Product vs. variant
A product page "Salomon XT-6 Trail Shoes" and a variant page "Salomon XT-6 Trail Shoes Women" target the same queries. Fix: canonical on the variant pointing to the main product, or clearly differentiate the titles and content.
Product vs. category
A category "Women Trail Shoes" competes with a product "Best Women Trail Shoes Salomon". Fix: differentiate intent. Category = browse all options. Product = buy this specific item.
Filter URL vs. category
A category "Trail Shoes" and a filter URL "/shoes?type=trail" display similar content and target the same query. Fix: canonical on filter URLs pointing to the main category.
| Symptom | Possible cause | Fix |
|---|---|---|
| Ranking instability on a query | Two pages competing | Canonical or content differentiation |
| Page alternates in results | Google cannot choose | Consolidate content on one page |
| Both pages rank at position 8-12 | Diluted PageRank | Merge or redirect one page to the other |
| Product and variant compete | Identical or too similar titles | Distinct title + canonical on variant |
The quickest cannibalization audit: export all your meta titles from your CMS, group them by first 5 words. Identical or very similar groups = cannibalization risk. Seegea lets you do this across your entire catalog in under 10 minutes.
Detect your cannibalization issues
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FAQ
In Google Search Console: Queries tab, click on a query, then check "Pages". If multiple pages rank for the same query, you have cannibalization. You can also use Screaming Frog + a keyword matrix to map all pages vs all target keywords.