Free Keyword Clustering Tool

Keyword Clustering Tool

Group a list of keywords into content clusters for blog posts, landing pages, and topic hubs

Paste from a spreadsheet, GSC export, or your favorite keyword tool. We strip duplicates and trim whitespace.

When set, we bias clusters toward this topic so it doesn't get scattered across multiple groups.

How it works

No black box. Here's exactly what Keyword Clustering Tool checks.

  1. 1

    You paste up to 200 keywords

    One per line. Spreadsheet exports, GSC top queries, or output from any keyword tool — all welcome.

  2. 2

    We classify each keyword by intent

    Informational, commercial, transactional, navigational, local, comparison, or question. Each cluster ends up with a coherent page type.

  3. 3

    We sub-cluster by shared content tokens

    Keywords that share the largest non-stopword phrase land in the same cluster, biased toward your seed topic if you set one.

  4. 4

    You get a content plan

    Each cluster becomes one article or page, with the recommended page type baked in.

Why this matters

Keyword research without clustering is just a long list. Clustering is what turns it into a content roadmap. The right granularity matters: too coarse and you build "kitchen sink" pages that try to rank for everything and rank for nothing; too fine and you build a fleet of thin pages that cannibalize each other. This tool aims for the middle.

  • Each cluster maps to one piece of content. If you have 12 clusters, you have 12 articles to write — in priority order.
  • Intent classification means each cluster gets the right page type — guides, comparisons, landing pages, FAQs.
  • Pages that target one tight cluster of related keywords rank far easier than pages targeting one broad keyword.
  • A seed topic biases clustering so your main topic stays together rather than getting scattered across 5 small clusters.

Want the full story across every page?

The Keyword Clustering Tool checks one URL. CrawlTide audits your whole site, tracks issues over time, watches your AI Visibility weekly, and pushes meta-tag fixes straight to your CMS.

Run a full audit freeSee all features

No credit card. Free tier covers a small site end-to-end.

Frequently asked questions

Are these clusters semantically accurate?
They're lexical, not semantic. Two keywords that share the most distinctive non-stopword get grouped — that's 80% as good as embedding-based clustering for most planning use cases. For "is this exactly the right cluster," look at SERP overlap (real tools test that). For "give me a content plan in 30 seconds," lexical works.
Why is the limit 200 keywords?
Public free tools shouldn't become a denial-of-service vector. 200 is enough to plan a content sprint or analyze a GSC export, and small enough to stay fast and cheap. CrawlTide's paid product clusters 50,000+ keywords with SERP-based similarity.
What's the difference between intent and topic clusters?
Intent is what the searcher wants to do (learn, buy, compare, navigate). Topic is what they want to do it about. We cluster on both: same-intent + same-topic keywords land in the same cluster. That's the unit you can ship as one piece of content.
Why did some keywords end up "unclustered"?
They didn't share enough tokens with anything else to form a group of 2+. Either they're unique (legit single-page targets) or you need more related keywords on those topics. Look at the unclustered list and ask: should this become its own page, or am I missing supporting keywords?
How do I use the seed topic?
Set it to whatever your content sprint is *about* — "AI visibility", "content marketing", "WordPress SEO". The clusterer biases toward keeping that topic's keywords together. Without a seed, related keywords on the topic might split into smaller clusters.
Can I export the clusters?
Not in v1 — the public tool shows them on-page only. CrawlTide's paid version exports clusters as CSV with search volume, difficulty, and ranking data attached.

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