MARZ.tools

Heading Structure Analyzer

Check your page's H1–H6 heading hierarchy for SEO and accessibility issues.

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About this tool

Paste HTML to visualize your heading structure (H1–H6) as an outline, flagging skipped levels, missing H1s, or multiple H1s.

How to use

  1. Paste the HTML of your page.
  2. View the extracted heading outline with hierarchy issues flagged.
  3. Fix flagged issues like skipped heading levels or multiple H1s.

FAQ

Why does heading structure matter for SEO?

A clear, logical heading hierarchy helps search engines and screen readers understand your content's structure and topic relationships.

Is having multiple H1s always wrong?

Modern HTML5 sectioning technically allows multiple H1s, but a single clear H1 per page remains the safest, most widely-supported SEO practice.

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