Heading Tags H1-H6 Hierarchy Checker
Validate your page's heading hierarchy from H1 to H6. Detect missing H1 tags, skipped levels, empty headings, and semantic structure issues.
Overview & Why This Matters
Heading tags create the semantic outline of your page. Search engines use H1-H6 hierarchy to understand content structure, topic relevance, and section importance. A single H1 tag, sequential heading levels, and descriptive text in every heading are fundamental for both SEO and screen reader accessibility.
Why Heading Structure Impacts Rankings & Accessibility
Signal Content Hierarchy to Google
Properly nested H1-H6 headings help Googlebot understand your page's topic structure, improving relevance scoring for featured snippets and passage indexing.
Improve Screen Reader Navigation (WCAG)
Assistive technologies use heading tags to generate a navigable document outline. Skipped levels and empty headings break this accessibility feature.
Boost Featured Snippet Eligibility
Pages with clear heading hierarchies are more likely to win featured snippets, as Google extracts content based on H2/H3 section structure.
Correct Heading Hierarchy Pattern
Ensure a single H1 followed by sequential subheadings without skipping levels:
<h1>Main Page Title (only one per page)</h1>
<h2>First Section</h2>
<h3>Subsection A</h3>
<h3>Subsection B</h3>
<h2>Second Section</h2>
<h3>Subsection C</h3>
<h4>Detail Point</h4>