A clean heading hierarchy helps in two connected ways: it gives search engines a clear map of a page's structure and subtopics, which supports both traditional ranking (helping match a page to related queries covered in different sections) and AI/answer-engine extraction (a language model can more reliably pull the right section's content when headings are structured logically); and it's a core accessibility requirement, since screen reader users often navigate a page by jumping between headings, and a skipped level (an H2 followed directly by an H4) breaks that navigation model even if it looks fine visually. A common mistake is choosing heading levels for their visual size in a design system rather than their semantic structure — that should be handled with CSS styling, not by picking a lower heading tag purely because it renders smaller.
Example
A page uses an H2 for 'Types of Alternative Assets' with H3s for each specific asset type nested underneath, rather than jumping straight from H2 to H4 for visual-size reasons alone.
Related terms
Related terms
Related Reading
404 Error
A 404 error is the standard HTTP status code returned when a requested page doesn't exist on the server — the classic 'page not found' response.
A/B Testing (SEO)
A/B testing in SEO is the practice of showing two versions of a page element — usually a title tag, meta description, or on-page element — to see which one earns a better click-through rate or ranking outcome.
AI Citation
An AI citation happens when an AI assistant like ChatGPT, Perplexity, Claude, or Gemini references or links to a specific page as the source for part of its answer.
