Free Heading Structure Checker

Enter any URL to see its full H1–H6 outline, heading counts, and warnings for common problems like a missing or duplicate H1 — key for both SEO and accessibility.

Example resultA sample report for example.com — run the tool on your own URL above for live results.
H1 tags
1 · good
H2 tags
3
H3 tags
4
Total headings
8
Hierarchy
No skipped levels
Empty headings
1 found
Heading outline
h1Example Domain
h2What this domain is for
h3Permitted uses
h3Reserved examples
h2More information

Why heading structure matters

Headings give your page a logical hierarchy that both search engines and screen readers rely on. Your H1 should describe the page’s main topic — use exactly one. Subsequent headings (H2, H3…) should nest in order without skipping levels.

Common heading mistakes

  • No H1, or multiple H1s competing for the main topic.
  • Jumping from H2 to H4 (skipped levels) — hurts accessibility.
  • Using headings purely for visual styling instead of structure.

Frequently asked questions

Is the heading checker free to use?

Yes, it is completely free. Enter any URL to extract its full H1-H6 outline and flag heading issues, no signup required.

Should a page have only one H1 tag?

It is best practice to use a single H1 that describes the page's main topic, since that makes the primary subject unambiguous for users and search engines. HTML5 technically allows multiple H1s within sections, but one clear H1 remains the safer, widely recommended approach.

How do I fix a broken heading hierarchy?

Use headings in order without skipping levels, so an H2 is followed by H3s rather than jumping straight to an H4. Reserve headings for real section titles and use CSS for styling, rather than choosing a level for how big it looks.

Embed this free tool on your site

Add this heading checker to your own blog or website — it stays free for your visitors, and the short credit line links back here. Just copy the snippet and paste it into your page’s HTML.

Embed code (HTML)
<iframe src="https://seoaiaudits.com/embed/heading-checker" width="100%" height="700" style="border:1px solid #e5e7eb;border-radius:12px;max-width:760px;width:100%" loading="lazy" title="Heading Checker"></iframe>
<p style="font-size:13px;font-family:system-ui,sans-serif;margin-top:8px;color:#6b7280">
  Free <a href="https://seoaiaudits.com/tools/heading-checker" target="_blank" rel="noopener">Heading Checker</a> by <a href="https://seoaiaudits.com" target="_blank" rel="noopener">SEO AI Audits</a>
</p>

Tip: adjust height if your layout needs more or less room. Please keep the credit line so others can find the tool.

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