Heading Structure Checker
Paste HTML to see its h1 to h6 outline in order, with warnings for a missing h1, extra h1s and skipped levels.
What is the Heading Structure Checker?
The heading structure checker reads pasted HTML and lists every h1 to h6 heading in order as an indented outline. It warns about a missing h1, more than one h1, skipped levels and empty headings. A tidy outline helps readers, screen readers and search tools, but it is not a guaranteed ranking factor.
How it works
The tool finds heading tags in order and indents each by its level. It warns if there is no h1, if there is more than one, if a level is skipped such as h2 followed by h4, and if a heading has no text. These are common best-practice checks, not strict rules.
How to use it
- Paste your page HTML, or just the part with the headings.
- Read the outline and any warnings.
- Fix skipped levels and extra h1 headings in your page.
- Check again until the outline reads like a clear table of contents.
Heading Structure Checker — FAQ
Is more than one h1 an error?
Not strictly, but one h1 describing the page is the common practice and keeps the structure clear.
Why do skipped levels matter?
They make the outline harder to follow, especially for people using screen readers that navigate by heading.
Do I need to paste the whole page?
No. Any HTML that includes the heading tags is enough.