Heading Hierarchy Scanner
H1-H6 structure audit
📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Heading hierarchy scanner
How to use this tool
- 1
Paste HTML
Page source.
- 2
See structure
Tree + issues.
- 3
Fix heading order
For SEO + A11y.
Frequently Asked Questions
One H1 rule?
Single H1 per page is traditional — HTML5 allows multiple via sectioning but screen readers + SEO still prefer one H1.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.