What is Heading Hierarchy?
The nested H1→H2→H3 outline of a page. A clean hierarchy lets readers scan and lets parsers chunk sections accurately for retrieval and snippets.
Related terms
H1 Tag
The page’s primary heading naming its topic. Exactly one per page, matching search intent; everything else nests below it in the heading hierarchy.
Table of Contents
Anchor-linked section lists that improve navigation, earn sitelinks, and expose heading structure to parsers. Auto-generate from H2/H3 IDs rather than hand-maintaining.
Chunking
Splitting content into retrievable passages for embeddings and RAG. Clear headings, one idea per section, and definitions up front make chunks that rank and quote cleanly.
On-Page SEO
Optimizing individual pages: titles, headings, content depth, internal links, images, and schema. On-page work decides relevance once technical SEO has made the page reachable.
Title Tag
The clickable headline in search results and the strongest on-page relevance signal. Google rewrites most titles, so clarity and completeness beat rigid length rules.
Meta Description
The optional summary that can become the result snippet. Absence is not a penalty and Google rewrites most descriptions, so prioritize valuable pages where controlled wording earns clicks.