📑 Heading Structure Checker

Analyze H1-H6 headings on any page. Detect missing H1s, multiple H1s, skipped levels, and empty headings. View a complete nested heading outline.

Paste any HTML containing headings. Only H1-H6 tags are analyzed.

About the Heading Structure Checker

Headings (H1–H6) create the hierarchical outline of your content. Search engines and assistive technologies rely on proper heading structure to understand your page. This tool helps you audit and fix heading issues.

Heading Best Practices

  • One H1 per page — The H1 should describe the main topic of the page.
  • Logical nesting — H2s under H1, H3s under H2s, never skip levels.
  • Meaningful text — Headings should describe the content that follows.
  • Include keywords — Where natural, include target keywords in headings.
  • No empty headings — Empty heading tags waste semantic value.

Frequently Asked Questions

What is a proper heading structure?
A proper heading structure uses one H1 (the main topic), followed by H2s (major sections), then H3s (subsections), and so on. Headings should nest logically without skipping levels (e.g., H2 → H4 without an H3 is a skipped level).
Why does heading structure matter for SEO?
Headings help search engines understand your content hierarchy and topic structure. Well-structured headings improve accessibility for screen reader users and can indirectly support better rankings through improved content organization.
Can I paste HTML directly instead of entering a URL?
Yes! Switch to the "Paste HTML" tab. Paste any HTML snippet and the tool will extract and analyze the heading structure.