Heading Structure Analyzer
Audit any page's H1–H6 outline and flag missing H1s, multiple H1s and skipped levels.
Quick answer: Audit any page's H1–H6 outline and flag missing H1s, multiple H1s and skipped levels.
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Frequently asked questions
- Is the heading analyzer free?
- Yes — free with no signup.
- Should every page have exactly one H1?
- Yes — that's the modern accessibility and SEO consensus, and it's how Lighthouse audits expect it.
- Why are skipped levels bad?
- Screen readers use the heading order to build their navigation tree. Skipping levels confuses the structure.
- Are my pages uploaded?
- No — every analysis runs in your browser.
- Does it parse full HTML documents?
- Yes — it parses anything you paste, body fragment or full document.