Paste the relevant HTML
Use a complete page when evaluating the main heading, or remember that a snippet may legitimately have no H1.
Heading Structure Checker
Review the heading outline in pasted HTML.
Extracts H1–H6 from detached HTML; markup is never displayed or executed. Warnings are hierarchy review prompts, not a ranking or accessibility score.
Last reviewed: · Testing methodology
How to use
See H1–H6 counts and prompts for missing, repeated, skipped or empty headings.
Inspect the ordered outline
Read headings in DOM order and check that their levels express the actual content structure.
Resolve meaningful issues
Add useful heading text or adjust levels where needed. Multiple H1 elements require context review, not an automatic ranking penalty assumption.
Limits and questions
Inputs are processed in your browser. Analytics and advertising can make separate network requests.
A result you can check
An H2 with text on multiple lines remains one H2 entry. A comment containing a fake heading is not a rendered heading.
Before using the result
Compare the outline with the rendered page and keyboard/screen-reader experience before deciding on changes.
Frequently asked questions
- Does every warning mean a search penalty?
- No. These are structural prompts. Search ranking is not calculated by this tool.
- Can it inspect dynamic headings or accessible names?
- Only the pasted markup is analyzed. Script-generated content, CSS appearance and some accessible-name behavior require a browser/accessibility review.