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Fix “Headings Are Not Structured” Accessibility Issues

Modified on: Mon, 11 May, 2026 at 8:41 PM

Environment / Applicability


Product/Feature: Siteimprove Accessibility
Version / Platform: Siteimprove
Audience: Website content editors / content authors / Web developers
Geographic/Language considerations: N/A


Question

How do I troubleshoot the issue?


Answer

You can open the HTML view in the Siteimprove page report to inspect that the heading tags are nested correctly.

In the example page report below:

  • An H3 heading, <h3>Chapter one</h3>, skips one heading level when nested under an H1 heading called <h1>Part one</h1>.
  • And the H6 heading, <h6>Chapter one</h6>, skips 3 heading levels when nested under the H2 heading <h2>Part two</h2>.

Page report showing heading structure errors


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