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Heading Structure Checker

Full H1 to H6 outline, with multiple-H1 and skipped-level warnings.

Free, no signup. We fetch the page once and read what your server sends back.

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What this checks

Headings are the outline of your page. They tell readers what is where, they tell screen readers how to navigate, and they are the chunks AI answer engines lift when quoting a source. A page with six H1s and no H2s has no outline at all.

  • Count of every heading level
  • The full outline in document order
  • More than one H1
  • Skipped levels, such as H2 straight to H4

How to act on the result

  • Exactly one H1, stating what the page is about.
  • Do not skip levels. Going H2 to H4 breaks the outline for screen readers.
  • Phrase H2s as the questions readers actually ask. That is what gets quoted.

Frequently asked

Can a page have more than one H1?

HTML5 permits it and Google tolerates it. It still dilutes the signal about what the page is primarily about, and most multiple-H1 pages got that way by accident through a page builder.

Does heading order matter for SEO?

Mildly for search engines, considerably for accessibility. Screen-reader users navigate by heading level, and a broken hierarchy makes a page hard to move through.

Should headings contain keywords?

They should describe the section accurately. If that naturally includes the keyword, good. Writing headings backwards from a keyword list produces the stilted subheadings that read as machine-written.

Do H4 to H6 matter?

Rarely, beyond keeping the outline coherent. Most pages need no more than H2 and H3.

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