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The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossarySEO & ContentHeader Tags (H1-H6)

SEO & Content

Header Tags (H1-H6)

HTML heading elements that structure page content into a hierarchy, helping readers and search engines understand topics.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

Header tags (H1-H6) are HTML heading elements that structure page content into a hierarchy, helping readers and search engines understand topics. The H1 usually states the page's main subject, while H2 through H6 organize subsections. Clear, descriptive headings improve scannability and accessibility, and help search engines extract answers for features like snippets.