Find H1, H2 and H3 hierarchy issues in pasted HTML.
Use the Heading Structure Checker
What this tool helps you check
Headings help readers scan a page and understand how sections relate. Paste article HTML to see a heading outline, multiple-H1 warnings and skipped levels. This complements the title preview and URL slug workflow when reviewing content before publication.
How to use it
- Paste HTML from the article editor or source view
- Inspect the outline and any level jumps
- Revise headings to reflect the actual section hierarchy
Interpreting the result
A skipped level can be valid in complex documents, and a clean outline does not prove content quality. The checker parses the submitted HTML locally in your browser and does not upload draft content.
Limitations and next steps
Check important decisions against your original business data and the relevant provider documentation. Results describe the inputs supplied, rather than a guarantee of future outcomes.
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Frequently asked questions
Can a page have more than one H1?
HTML can contain multiple H1 headings, but one clear page heading usually makes an editorial page easier to understand.
Is this Heading Structure Checker free?
Yes. This tool is available without an account. URL inspection requests are rate limited to keep the service responsive.