Free SEO Tool
Topic Cluster Generator
Turn one topic into a pillar page and the supporting articles around it, each targeting a different query, with the internal links mapped out. Start from a topic, not a keyword list.
How this topic cluster tool works
Three steps, and the first one is the only input that matters:
Enter one topic
Just the subject you want to own. No keyword list needed, which is the difference between this and a clustering tool.
Pick a cluster size
Six, nine or twelve supporting articles. Start smaller than feels right: a finished cluster of six beats an abandoned plan for twelve.
Get the plan and the links
A pillar page, the supporting articles each targeting a different query, and which article should link to which, with the anchor text.
This or the Keyword Clustering Tool?
We have two tools in this area and they answer different questions, so it is worth being explicit about which one you want.
Use this one when you have a topic and nothing else. You know the subject you want to own, you have not done keyword research yet, and you need to know what to write. It generates the pillar, the supporting articles and the links between them.
Use the Keyword Clustering Tool when you already have a keyword list. You have exported a few hundred keywords and need them sorted into groups that each deserve one page. That starts from data you already hold, and this one starts from a blank page.
Used together the order is: generate a cluster here to decide the shape, research the suggested targets, then run the resulting keyword list through the clustering tool to confirm the grouping holds up against real data.
What the topic cluster generator produces
A plan you can execute, not a description of what a topic cluster is. The internal links are part of the output, because without them a cluster is just a folder.
The pillar page
Its working title, the head term it targets, and the sections it needs to cover to be the obvious main page rather than a thin hub linking elsewhere.
Articles with distinct targets
Each cluster article gets its own specific query. Two articles chasing one query is the failure mode of most cluster plans, so the generator is instructed hard against it.
An angle for each article
One sentence on what this article covers that no sibling does. If that sentence cannot be written honestly, the article should not exist.
Anchor text, per article
The descriptive phrase the pillar should use when linking down. Never click here, and never the same phrase twice, since identical anchors for different pages confuse the signal.
Sibling links
Which cluster articles genuinely relate to each other. Some will have none, which is better than inventing a connection to fill a template.
Mixed intent
Definitions, how-to, comparisons, problems and costs. A cluster of twelve how-to articles covers one intent twelve times and wins none of the others.
Pillar page against cluster article
They are different jobs, and treating a cluster article like a small pillar is how clusters end up competing with themselves.
| Pillar page | Cluster article | |
|---|---|---|
| What it targets | The broad head term for the topic | One specific, narrower query |
| Length | Long, because it covers the whole subject | As long as its question needs, often much shorter |
| How many | One per topic | Six to twelve is a workable range |
| Links | Links down to every cluster article | Links up to the pillar, and across where relevant |
| Purpose | Be the definitive page on the subject | Answer one question better than anyone |
| When to publish | First or last, but link it up either way | Steadily, linking each one back as it goes |
Where topic clusters go wrong
Nearly all of these are planning failures rather than writing failures, which is why they are cheap to avoid and expensive to fix.
- 1Cluster articles that target the same query. The most common failure, and it turns a cluster into self-competition. If two titles could rank for the same search, they should be one article. Our Keyword Cannibalization Checker exists because this happens so often.
- 2A pillar page that is only a table of contents. A hub page that just links out gives a reader nothing and gives search engines little to rank. The pillar has to be genuinely useful on its own, with the cluster adding depth rather than supplying the substance.
- 3Publishing the cluster without the links. The links are the cluster. Without them you have published a set of unrelated articles that happen to share a subject, and none of the benefit arrives.
- 4Planning twelve and writing three. A partial cluster is mostly wasted effort, because the pillar ends up linking to gaps. Pick a size you will actually finish, then extend it later.
- 5Choosing a topic you cannot compete on. A cluster amplifies whatever chance you already had. On a term dominated by far stronger sites it will not create one. Check difficulty before committing to twelve articles.
- 6Treating the plan as final. It is a starting point built from a model's knowledge of the subject, not from your keyword data. Check the volumes and difficulty for the suggested targets before writing anything.
Before you write the cluster
The plan comes from a model's understanding of the subject, not from your keyword data, so treat it as a starting structure rather than a research output. Two checks are worth doing first.
The CSV export is useful here as a topic cluster template: one row per article, with the target and anchor text already filled in, so you can add volume and difficulty columns beside them and brief the work from one sheet. That is usually where topic clusters seo work actually gets done, in a spreadsheet rather than a diagram.
Confirm the suggested targets have real demand and are winnable with the Keyword Difficulty Checker and Keyword Search Volume. Then, once the cluster is published, check it has not turned into self-competition with the Keyword Cannibalization Checker, and that the links you planned actually exist with the Internal Link Checker.
Topic cluster FAQ
What is a topic cluster?
A group of pages covering one subject together: a broad pillar page, several narrower articles each answering a specific question, and internal links tying them into a set. The point is that search engines understand a well-linked group better than they understand the same pages published in isolation.
What are topic clusters in SEO?
The same structure applied deliberately. Rather than publishing articles as topics occur to you, you map a subject, decide which page owns the head term, and give every supporting article its own distinct query. It is mostly a planning discipline, and the SEO benefit follows from the planning.
What are cluster topics?
The narrower subjects that support a pillar. For a pillar on email marketing, cluster topics might be subject line testing, list segmentation, deliverability and automation. Each is a real question someone searches for on its own, not a section heading lifted out of the pillar.
What are pillar and cluster pages?
The pillar is the main page covering a subject broadly and targeting its head term. Cluster pages are the supporting articles, each targeting one specific query and linking back to the pillar. The pillar links down to all of them, which is what turns a pile of posts into a structure.
What is a pillar post?
Another name for the pillar page. It is the page you would send someone who asked to understand the subject from scratch: comprehensive, standalone, and the one you want ranking for the broad term.
What is a pillar content?
Content substantial enough to anchor a topic, usually a long guide covering a subject end to end. The word "pillar" is about its structural role rather than its length: it is what the cluster articles lean on and link to.
Can you give me an example of a pillar page?
A guide titled "Email Marketing: A Complete Guide" targeting the term "email marketing", covering strategy, list building, design, deliverability and measurement at a useful depth, and linking out to a dedicated article on each. Generate one above and you get exactly that shape for your own topic.
What is a pillar page example?
Most large marketing sites have them. HubSpot's guides to inbound marketing and Semrush's guides to keyword research are pillar pages: broad, thorough, and linking to dozens of narrower articles that each handle one piece in detail.
What is the main difference between a pillar page and a landing page?
Purpose. A pillar page is educational and built to rank for a broad informational term, so it is long and links out generously. A landing page is built to convert on a single action, so it is focused and links out as little as possible. Confusing the two produces a page that neither ranks nor converts.
What are the 5 pillars of content strategy?
Different frameworks name different fives, so treat the number loosely. The elements that consistently matter are audience understanding, topic selection tied to real demand, content quality, distribution, and measurement. Topic clusters sit in the second and third: deciding what to cover and making the coverage coherent.
What are 5 content pillars?
In social media, content pillars are recurring themes you post about, which is a different meaning from a pillar page in SEO. The overlap is only the word. This tool is about the SEO sense: a main page anchoring a cluster of supporting articles.
Can you give me an example of a content pillar?
For a project management tool, a content pillar might be "remote team collaboration", supported by articles on asynchronous communication, meeting reduction, time zone handling and documentation practices. The pillar covers the theme, each article owns one question inside it.
What does Content Hub do?
A content hub is the published form of a topic cluster: a landing area for a subject linking to everything you have written about it. Some platforms sell tooling named Content Hub, but the underlying idea is the same structure this tool plans.
What are some examples of content hubs?
Moz's Beginner's Guide to SEO and Ahrefs' blog category pages both work as hubs: a main entry point per subject, with links out to detailed articles. The pattern is identical to a pillar page, differing mainly in whether the hub itself is written to rank.
What does "topical authority" mean?
The idea that covering a subject thoroughly makes search engines more likely to trust you across it, rather than judging each page alone. Topic clusters are the practical method: covering a subject properly and linking the coverage together. It is a useful mental model rather than a metric you can measure directly.
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