Heading Structure Analyzer

Fetch or paste HTML, extract h1–h6, visualize the outline and check heading order and skipped levels.

What we check

Presence of a top-level h1.
Sequential order (no level skips, e.g., h2 → h4).
Empty or overly short/long headings.
Visual outline of h1–h6 in document order.

Results

Enter a URL or paste HTML, then click Analyze.

Official guidance & references

FAQs

HTML allows multiple h1s, but a single, clear page title is easier for users and tools. Focus on clarity and hierarchy.

Don’t jump from h2 to h4 without an h3 sibling level in between. Keep levels increasing or decreasing by one as you nest sections.

Headings primarily improve accessibility and comprehension. Clear structure can indirectly help SEO by making content easier to parse and link to.

Use semantic heading tags (h1–h6) for structure, not just CSS styling. Screen readers and tools rely on headings for navigation.

Why this output matters

Heading hierarchy helps users, assistive technology and search engines understand how a page is organized. The output helps SEO and content teams catch structural problems that reduce clarity, accessibility and maintainability.

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