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Keyword Clustering Tool

Export 500 keywords from any research tool and you don't have 500 posts — you have maybe 40 pages. This clustering tool groups a raw keyword list by shared significant terms, so near-duplicates like “best crm for startups”, “top crm startups”, and “crm software for startup” land in one cluster targeting one URL.

Clustering is the cure for keyword cannibalization: when three of your posts target the same intent, they split links and impressions and none of them ranks. The output gives you a suggested primary keyword per cluster (the shortest, highest-intent phrase), the supporting terms to cover as H2s, and the singletons that need their own page or should be dropped. It runs entirely in your browser, so client keyword lists never leave your machine.

How to Use the Keyword Clustering Tool

  1. 1Paste your keyword list — one keyword per line. CSV exports work if you paste only the keyword column.
  2. 2Choose a clustering strictness: loose groups broadly, strict only groups near-duplicates.
  3. 3Read the clusters — the first line of each is the suggested primary keyword for that page.
  4. 4Copy the result into your content plan and assign one URL per cluster.
  5. 5Cover the supporting keywords in that page's H2s and H3s rather than as separate posts.

Frequently Asked Questions

What is keyword clustering?
Grouping keywords that share the same search intent so each group maps to a single page. It's the step between keyword research and your content calendar, and skipping it is the most common cause of thin, competing posts.
How does this tool decide what belongs together?
It normalizes each keyword (lowercase, strips stopwords and plurals) and groups by shared significant terms, scored against your strictness setting. It's lexical clustering — fast, private, and deterministic. True SERP-overlap clustering requires paid rank data, so treat the output as a strong first pass you refine by eye.
What is keyword cannibalization?
When two or more of your own pages target the same query, so Google flip-flops between them, splits internal links and backlinks, and ranks both lower than one consolidated page would. Fix it by merging the weaker page into the stronger one and 301-redirecting it.
How many keywords should one page target?
One primary keyword plus every close variant and long tail that shares its intent — often 10 to 50 terms for a thorough guide. That's a healthy cluster, not stuffing, as long as they're covered naturally in sections readers actually want.

Related Free Tools

Long Tail Keyword Generator

Turn one seed keyword into 80+ long tail variations.

Topic Cluster Planner

Pillar + 10 clusters + linking rules for any topic.

Keyword Density Checker

Occurrences + density % with a stuffing warning.

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