Kong Metrics
Back to Blog
technical-seo advanced-seo

Cannibalization Entropy: The Advanced SEO Metric You Need

Kong Metrics Team · · 3 min read

Keyword cannibalization is a familiar concept to most SEOs: two or more pages on your website competing for the same search term. But diagnosing cannibalization with simple "Yes" or "No" overlaps is flawed.

If your site holds both Position #1 and Position #2 for a keyword, that's not cannibalization—that's SERP domination. The real problem occurs when your traffic is fractured into tiny, unstable pieces across multiple low-ranking URLs.

To measure the severity of this fracture, Kong Metrics developed an advanced metric: Cannibalization Entropy.

What is Cannibalization Entropy?

In physics and information theory, entropy is a measure of disorder or randomness. In SEO, Cannibalization Entropy measures the disorder of your click share for a specific search query.

If 100% of the clicks for a given keyword go to a single, highly authoritative page, your entropy is exactly 0.0 (perfect order).

If those clicks are split evenly across 10 different URLs, your entropy approaches 1.0 (maximum chaos).

Intent Overlap vs. True Cannibalization

Standard SEO tools will flag any keyword where two URLs receive impressions. This creates massive "false positive" reports.

For example, a user might search for "pricing." Both your Home Page and your Pricing Page will get impressions. But naturally, the Pricing Page gets 99% of the clicks. That's not cannibalization; that's just normal search behavior.

Entropy ignores the noise and focuses on the actual distribution of clicks and impressions. It helps you distinguish between harmless intent overlap and true, damaging cannibalization.

How Kong Metrics Calculates Entropy

The Cannibalization Entropy algorithm within Kong Metrics analyzes your raw GSC data to calculate a severity score for every keyword in your portfolio.

  1. Low Entropy (0.0 - 0.2): One clear winner. You have a dominant URL. No action required.
  2. Medium Entropy (0.3 - 0.6): Traffic is split between a primary page and a secondary page. Monitor this closely, and consider adding a rel="canonical" tag.
  3. High Entropy (0.7 - 1.0): Total chaos. Google has no idea which page to rank, and your clicks are fractured across 3+ URLs. Immediate consolidation and 301 redirects are required.

The Business Value of Entropy

By prioritizing your technical SEO clean-ups based on Cannibalization Entropy, you save hours of analysis. Instead of sifting through thousands of "competing URLs," Kong Metrics instantly shows you the High Entropy clusters.

Fixing these chaotic, high-entropy keyword clusters immediately consolidates your site's authority, often resulting in rapid ranking boosts and more stable search traffic. Stop guessing about cannibalization and start measuring the disorder.

For further analysis, check our Keyword Cannibalization Guide, read URL Clustering for SEO, and use Diagnosing SEO Thin Content GSC to clean your site architecture.