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Pro SERP Cluster

proserpcluster.com

Free plan Web
Visit proserpcluster.com
Spec score 7.3 #22 of 27 in Keyword Clustering Tools

What it is

Pro SERP Cluster is a free web tool that groups keywords by overlap in actual Google search results. It uses SERP data to identify terms sharing search intent and keywords competing for the same rankings, which can inform content consolidation. The tool also supports blog post optimization, pillar-page creation, content-gap analysis and topic clusters for hub-and-spoke planning, topical authority and site architecture. Each clustering run supports up to 500 keywords. Users can choose a target region and language and adjust the overlap threshold to change clustering strictness. Google SERPs are retrieved through a Serper.dev API key, which is stored locally for the session only. Results can be exported as CSV, and the free plan includes CSV import and export. The product is aimed at professional SEOs planning content, building topic authority or addressing cannibalization. The listed plan costs nothing.

Spec sheet

Purpose
Pro SERP Cluster groups keywords using overlap among actual Google search results.Read 30 Sep 2026 · proserpcluster.com
Audience
The product is built for professional SEOs planning content, building topic authority, or fixing cannibalization.Read 30 Sep 2026 · proserpcluster.com
API integration
Users connect a Serper.dev API key to retrieve Google SERPs.Read 30 Sep 2026 · proserpcluster.com
API key storage
The Serper.dev API key is stored locally for the session only.Read 30 Sep 2026 · proserpcluster.com
Cannibalization
It identifies keywords competing for the same rankings so content can be consolidated.Read 30 Sep 2026 · proserpcluster.com
Configuration
Users can select a target region, language, and overlap threshold for clustering strictness.Read 30 Sep 2026 · proserpcluster.com
Content planning
It supports blog post optimization, pillar-page creation, and content-gap analysis.Read 30 Sep 2026 · proserpcluster.com
Data source
The tool uses real Google SERP data rather than NLP or embedding approximations.Read 30 Sep 2026 · proserpcluster.com
Export
Cluster results can be exported as a CSV file.Read 30 Sep 2026 · proserpcluster.com
Input limit
A clustering run supports up to 500 keywords.Read 30 Sep 2026 · proserpcluster.com
Search intent
SERP overlap is used to reveal shared search intent between keywords.Read 30 Sep 2026 · proserpcluster.com
Topic clusters
It groups keywords into topic clusters for hub-and-spoke content, topical-authority building, and site-architecture planning.Read 30 Sep 2026 · proserpcluster.com

Plans and prices

Free Free up to 500 keywords per clustering run · CSV import/export Read 30 Sep 2026 · proserpcluster.com

Every Pro SERP Cluster plan and price →

Strong points and limits

Strong points

  • Uses actual Google SERP overlap for clustering.
  • Runs support up to 500 keywords.
  • Region, language and overlap threshold are configurable.
  • Exports cluster results as CSV.

Limits

  • A Serper.dev API key is required to retrieve SERPs.
  • Each clustering run is limited to 500 keywords.

Who it suits

It suits professional SEOs who plan content, build topic authority or need to identify competing keywords. It is also relevant to people organizing hub-and-spoke content or evaluating content gaps.

Verdict

Pro SERP Cluster focuses on search-result overlap, with controls for region, language and clustering strictness. Its free plan and session-only API-key storage are specified, alongside the 500-keyword run limit.

Where Specifiction places it

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