Heading Structure Checker
Audit heading structures (H1-H6). Ensure a single H1, find empty elements, check nesting progression, and inspect visual outline charts.
HTML Source Input
Paste your page's HTML output to scan its outline.
Outline Structure Rules
• Logical Sequence: Use H1 for document title. H2 for primary chapters. H3 for sub-sections. Never skip heading increments.
• Crawl Readability: Search engines inspect outline layouts to understand context relevance weightings on a page.