Refinity.io
SEO

Topic Cluster Builder — Free Keyword Matrix

Enter the keyword you want to own. In about a minute you get the pillar it belongs to, five to eight clusters beneath it, and five to ten subtopics per cluster, each with an intent, a funnel stage, a content type, and whether real people are typing it.

Free. No email required.

What happens: we ask Google Autocomplete what people type around your keyword, read your page if you gave one, then build the pillar, the clusters and the subtopics with an intent, a funnel stage and a content type on every row. Each subtopic says whether it came from a live suggestion or from the model.

Scope

What every row carries

The matrix is a content plan, not a keyword dump. Each column exists so a row can be briefed without another meeting.

  • Pillar

    The hub topic. Either your seed, or the larger topic your seed belongs to when the seed is too narrow to be a hub on its own.

  • Clusters

    Five to eight sub-themes that partition the pillar without overlapping. Each is a group of pages that link to the hub and to each other.

  • Subtopics

    Five to ten search phrases per cluster, lower case, as a person would type them. One page each.

  • Intent

    Informational, commercial, transactional or navigational: what the searcher wants from the page.

  • Funnel stage

    Awareness, consideration, decision or retention: where the reader is when they search it.

  • Content type

    The page that serves the row: guide, comparison, checklist, calculator, case study, FAQ, landing page, glossary.

  • Source

    Live suggestion when the phrase came back from Google Autocomplete word for word. Model when the builder proposed it to complete the theme.

Structure beats volume

The usual keyword tool hands you five hundred phrases sorted by a volume estimate and leaves the hard part to you: which of them belong together, which page answers which, and where the hub is. This builder starts from the structure. It decides what the pillar is, partitions it into themes that do not overlap, and only then fills each theme with phrases. Volume can be layered on later; a plan without structure cannot.

Why the evidence is marked on every row

A model can propose plausible phrases nobody searches. Autocomplete cannot: every suggestion it returns is something people have typed. So each row says which it is. Rows marked as live suggestions are the safe bets to write first. Rows marked as model complete the theme and are worth a quick check in Search Console or a volume tool before they get a brief.

What this builder cannot tell you

It does not know search volume, difficulty, what you already rank for, or what your competitors have published. Pair it with Search Console for the first, and with the On-Page SEO Checker once a page exists, to see whether it says what the row promised. Treat the matrix as the first draft of a quarter, not the final one.

Process

How the builder works

  1. Ask Autocomplete what people type

    We query Google Autocomplete for the seed and fourteen variants of it (how, what, why, best, vs, for, near, cost, examples, tools, checklist, template, guide, problems). The phrases that come back are real queries. When the endpoint refuses, the run says so and continues without them.

  2. Read your page, if you gave one

    One fetch of the URL for its title, description, headline and navigation, so the clusters lean toward your business and your reader. The page is not audited.

  3. Decide whether the seed is a pillar or a spoke

    A seed broad enough to have five distinct sub-themes becomes the pillar. A narrower seed is placed inside the matrix of its parent topic, and the parent is named.

  4. Build the matrix and mark the evidence

    The model writes the clusters and subtopics with intent, funnel stage and content type. A subtopic is marked as a live suggestion only when it appears verbatim in what Autocomplete returned; the builder checks this itself rather than taking the model’s word for it.

Proof

The intent and funnel vocabulary

Every row in the matrix carries one intent and one funnel stage. These are the definitions the builder applies.

LabelWhat it meansNotes
InformationalLearn or understandGuides, explainers, glossaries. Most of a healthy pillar.
CommercialCompare, evaluate, chooseComparisons, reviews, “best” lists, alternatives.
TransactionalBuy, book, sign up, downloadLanding pages, pricing, tools, templates.
NavigationalReach a specific brand or pageRare in a cluster; usually your own brand terms.
Awareness → RetentionNaming the problem → getting more from what they haveConsideration and decision sit between. A matrix that is all awareness has nothing to convert.
FAQ

Frequently asked questions

  • What is a topic cluster?

    A pillar page that covers a broad topic, surrounded by narrower pages that each answer one question within it and link back to the hub and across to each other. Search engines read the structure as expertise; readers find their next question one click away. This builder gives you the map: the pillar, the clusters and the pages.

  • Does it show search volume or keyword difficulty?

    No, on purpose. Volume tools already exist and they all disagree with each other. This builder answers a different question: what should surround this keyword, and in what order. The only quantitative signal it uses is whether a phrase came back from Google Autocomplete, which proves people type it.

  • What does “live suggestion” versus “model” mean on a row?

    Live suggestion means the exact phrase came back from Google Autocomplete for the seed or one of its variants, so there is demand behind it. Model means the builder proposed it to complete a theme. The check is done by the builder, not by the model describing its own work, so the label can be trusted.

  • Why does the report say my keyword is a subtopic?

    Because it is too narrow to be a hub: a specific question, a feature, a comparison. The builder names the larger topic it belongs to and builds the matrix around that, with your keyword placed inside it. That is usually the more useful plan, because it shows which pillar page your keyword should link up to.

  • What if the expansion was blocked?

    Google Autocomplete is an unofficial endpoint and sometimes refuses automated requests. When that happens the report says so, every subtopic is marked as model-proposed, and the phrases are kept conservative. Re-running later usually gets the suggestions back.

  • Is it free, and do I have to give an email address?

    The full matrix is free with no email required, and you can copy it as Markdown or download it as CSV. If you want it in your inbox, there is an optional form on the report page.

  • How long are reports kept?

    Report links stay live for 90 days. Re-running the same seed, site and industry within 24 hours returns the existing report rather than building another.

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Method and vocabulary last reviewed by the Refinity.io team.