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Heading Structure Checker
Headings are the outline search engines and screen readers use to understand your page. Paste your page HTML and this checker lists every heading in order, then flags multiple H1s, skipped levels and empty headings.
Use the tool
How to use the Heading Structure Checker
- Paste the HTML source (or body content) of the page.
- Adjust any optional settings to match your page, business or campaign.
- Click the button to generate your result instantly — nothing is uploaded; the tool runs in your browser.
- Copy the result, or download it as a file where that option appears, and paste it into your site, document or campaign.
Frequently asked questions
How many H1s should a page have?
One. It should state the page's main topic, close to the meta title but written for humans.
Why do skipped levels matter?
Jumping from H2 to H4 breaks the document outline, which hurts accessibility tools and makes the page structure harder to parse.
Can I paste just part of the page?
Yes — the checker analyses whatever HTML you paste, so a template section on its own works fine.