Build a topical cluster for your website in under a minute. Enter your domain, pick the main article you want to rank for, and this topical cluster builder maps the supporting and long-tail articles underneath it — each with its own target keyword.
Completely free. No account, no email, no watermark. Download the cluster as Markdown or CSV.
A topical cluster is a group of articles built around one central subject. One main article covers the subject broadly. Supporting articles each take a sub-topic in depth. Long-tail articles sit underneath those, answering the narrower questions people actually type. Internal links hold the whole thing together.
The reason it works is that search engines and AI systems no longer judge a page in isolation. They judge whether a site is a credible source on a subject — and completeness is the signal. A single well-optimised page competing against a site that covers the entire topic loses, even if that page is better written.
You will see the same idea called a topic cluster, a content cluster, or a pillar-and-spoke model. The naming differs; the structure does not.
It reads your website: the scan follows your robots.txt to your declared sitemap, falls back to /sitemap.xml, and falls back again to your homepage navigation, pulling the title, meta description and first heading from your most important pages.
It proposes three subjects, three ways each — framed to drive sales, to educate visitors, or to build topic authority. You pick one, and four supporting articles plus twelve long-tail articles are generated underneath it, each with its own target keyword.
You download the result as Markdown to hand to a writer, or CSV to open in a spreadsheet.
A keyword list tells you what to write about. It does not tell you how the pieces relate, which article should rank for the head term, or what links to what — and those are the decisions that determine whether any of it ranks.
Layer 1 is the page you want ranking for the broad, competitive phrase. Layer 2 covers the sub-topics that make layer 1 credible. Layer 3 catches the specific, low-competition searches that are far easier to win, and passes authority upward through internal links as it does.
A topical cluster is a group of articles built around one central subject. A main article covers the subject broadly, supporting articles each take one sub-topic in depth, and long-tail articles answer narrower questions underneath those. Internal links tie them together. The point is coverage: search engines and AI systems judge whether a site is a credible source on a topic by how completely it covers it, not by how many times a keyword appears on one page.
Enter your domain and the generator reads your website — it follows your robots.txt to your sitemap, falls back to /sitemap.xml and then to your homepage navigation, and pulls the title, meta description and first heading of your most important pages. That scan is passed to Claude, which works out what your business does and proposes three subjects you could own, each framed three ways. You pick one, and the supporting and long-tail layers are generated underneath it automatically.
Yes. Enter a URL, pick an article, get a complete cluster and download it as Markdown or CSV. There is no account, no email required and no watermark. We ask for an email only if you want to join the waitlist for the full builder inside Altheo, and that is entirely optional.
Seventeen: one main article, four supporting articles, and three long-tail articles under each supporting article. Every one of them comes with its own target keyword and a one-line description of what it should cover. The widths are fixed, which is part of what makes this the lightweight version.
Each subject is offered as drive sales, educate visitors, or build topic authority. The same subject aimed at a reader who is ready to buy needs a different keyword, a different angle and different supporting articles than one aimed at a reader who does not yet understand their problem. Choosing the direction up front is what stops the cluster from being generically informational when you actually needed it to sell.
The cluster is built from a shallow scan — page titles and meta descriptions, not full page content — with a fixed shape and no search-volume validation. It does not know your margins, your competitors, which of your pages already rank, or what you have tried before. It is a strong starting structure, not a finished content plan.
Yes. Download it as Markdown or CSV and import it into a free Altheo account, where you can edit every article, discuss the angles with Altheo, drop what does not fit and expand the cluster layer by layer with your company profile and full website behind it.
Publish the main article first if you can — the supporting articles link back to it, and those links are most of the point. After that, order matters far less than finishing. A cluster where the main article and half the supporting articles exist beats one where seventeen titles sit in a spreadsheet.