SERP Similarity Tool: Jaccard Overlap Calculator

A serp similarity tool compares organic top-10 URL sets with the Jaccard index (|A ∩ B| / |A ∪ B|). High overlap means one URL. Low overlap means two intents.

Engineers comparing two organic top-10 URL lists on a glass table as a serp similarity tool Jaccard overlap exercise

AI Edited

AI-generated overlap session. Raw provenance file.

Target Query A: Top 10 Ranking URLs (1 per line):

Target Query B: Top 10 Ranking URLs (1 per line):

Jaccard URL Overlap: 70.0%

Common Ranking URLs: 7 / 10 URLs

🔒 CONSOLIDATE: Target on Same Page

Strategic Recommendation: Jaccard overlap $\ge 40\%$ indicates Google treats both queries with identical search intent. Do NOT create separate URLs to avoid self-cannibalization. Target Keyword B as an H2 section or semantic synonym inside the primary Macro Pillar.

Last updated: 30 August 2026

TLDR

A serp similarity tool scores organic top-10 URL overlap with Jaccard (|A ∩ B| / |A ∪ B|).
Paste organic URLs only. Ads follow bids, not intent.
≥ 40% on this widget → one URL. Below that → two pages, then cross-link.

How SERP similarity is calculated

Jaccard similarity is |A ∩ B| / |A ∪ B| for two sets (Jaccard index). Here A and B are organic ranking URLs, not ads. Paste top-10 organic results only.

Analyst crossing out paid-ad rows so only organic URLs remain for serp similarity Jaccard overlap — AI-generated organic-only filter. Raw provenance file.

Ads distort the union. The same landing URL can appear in paid results across unrelated queries. This tool does not fetch Google. You paste URLs. First-party GSC on this domain showed 15 impressions at position 81.2 for serp similarity tool (30 Jul–27 Aug 2026).

Thresholds this calculator uses

Jaccard	Decision
≥ 40%	Consolidate onto one URL (variant as an H2)
< 40%	Separate pages, then cross-link

40% is a working heuristic for this widget, not a Google-published cutoff. Pair the number with intent labels from the SXO user intent skill.

FAQ

What is a SERP similarity tool?

A calculator that scores how much two keywords share the same organic ranking URLs, usually with Jaccard overlap.

Why exclude ads?

Paid URLs follow bid strategy, not organic intent. Counting them inflates or deflates similarity.

Is this the same as cosine similarity on embeddings?

No. This page uses set overlap of URLs. Embeddings measure text similarity, not SERP identity.