What is heading structure?

Heading structure is the hierarchy of headings on a page: a single top-level title, then sub-headings beneath it, nested in a logical order. It signals what the page is about and how its sections relate.

Why does heading structure matter for AI engines?

An engine often uses headings to locate the part of a page that answers a question. A clear hierarchy makes that easier. It is one input to how readable a page is, not a promise that an engine will quote it.

Should every page have only one main heading?

As a rule, one top-level heading states what the page is, and everything else nests below it. Multiple competing top-level headings or headings chosen for size instead of meaning make the page harder for a machine to parse.

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Glossary · 2 min read

Heading structure

The order and nesting of a page's headings, one main title and the sub-points beneath it, that tells a reader, human or machine, how the page is organized and where each answer lives.

You probably already heard that headings are "good for SEO." The part that gets left out: an AI engine often reads your headings before it reads your sentences.

What heading structure is

Heading structure is the outline of a page expressed in its headings. One heading states what the whole page is. Sub-headings break that into sections. Their order and nesting tells a reader how the page is organized.

That reader is increasingly a machine. When an engine wants the part of a page that answers a specific question, the headings are the index it scans first.

Why AI engines lean on it

A clear heading hierarchy is a table of contents a machine can trust. It can jump to the right section, read the answer beneath the right heading, and understand which point sits under which.

When headings are chosen for how big the text looks rather than what the section means, that index breaks. The engine sees a heading that promises one thing and content that delivers another, and it has to fall back to guessing.

The old way and the new way

The old way picked heading levels visually. You wanted a line bigger, so you tagged it as a larger heading, never mind whether it was a true sub-point.

The new way treats heading levels as logic. The hierarchy describes how ideas nest, and the styling follows from the meaning rather than the other way around.

The damaging admission

Perfect heading structure does not rescue a page with nothing to say. A flawless outline over empty sections just helps a machine confirm, quickly, that the answer is not here.

And on most sites the headings come partly from a theme or builder, so what reads as one clean hierarchy can hide two competing top-level headings you never see. Tidy on screen is not the same as tidy in the markup.

How to check yours

Read only your headings, top to bottom, and ignore everything else. If that outline alone tells the story of the page in order, a machine can probably follow it. If it jumps around or repeats the same level, the map is muddled.

Run a free scan on any URL to see how an engine reads your structure today, then use the guide to optimizing headings for AI to fix what is off.

See whether your headings map the page for a machine.

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