What is Heading Hierarchy?
TL;DR
Heading hierarchy is the logical, nested structure of headings (H1 through H6) on a web page that helps both users and AI models understand the organization of your content.
Last updated: 2026-03-09
Definition#
Heading hierarchy refers to the structured use of HTML heading elements (H1 through H6) to organize content on a page. A proper hierarchy uses one H1 as the main title, H2 elements for major sections, H3 elements for subsections, and so on — without skipping levels.
Think of it like a book outline. H1 is the book title. H2s are chapter titles. H3s are sections within chapters. This logical nesting helps readers scan the page and helps AI models understand how different parts of your content relate to each other.
Common mistakes include using multiple H1 tags, skipping from H2 to H4, using heading tags for styling instead of structure, and creating headings that are too vague to be useful.
Why It Matters for AI Readiness#
AI models use heading hierarchy to navigate your content and understand its structure. When headings are clear and properly nested, AI can quickly find the section that answers a specific question. This improves your Content Quality score.
See How to Structure Content for AI Citations for detailed heading hierarchy best practices.
Related Concepts#
Heading hierarchy is a component of Content Quality. It works alongside Answer-First Content and supports Entity Recognition by grouping related information under descriptive labels.
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