Paste HTML to see your H1–H6 headings in document order. The Heading Structure Checker identifies empty headings, skipped levels, and the number of H1 elements, helping you review how a page is organized before publishing.
How to Use Heading Structure Checker
- Copy the HTML containing the page sections you want to inspect.
- Paste it into the source field and run the check.
- Review the headings in order and investigate empty or skipped levels.
- Compare the outline with the rendered page before changing heading tags.
Check the outline of your HTML
Headings should help readers understand the main topic and navigate its sections. This tool reads heading elements from the supplied source without executing scripts. It can be useful after editing a CMS page, combining content sections, or changing a reusable template.
Example: a skipped level
A page with an H1 main heading followed immediately by an H3 subsection will receive a skipped-level prompt. Review whether an H2 section is missing or whether the H3 should be an H2. The tool cannot decide the intended meaning of your outline; it shows where to inspect.
Review findings in context
Multiple H1 elements are a review prompt, not automatic proof of an SEO problem. A heading can also be present in source but hidden in the rendered page. Check the visible layout and accessibility behavior as well as this source outline. Use heading tags for section structure rather than simply to make text larger.
For a public URL, the On-Page SEO Checker can report source headings with other page metadata. Use the Readability Checker when the text inside those sections needs editing.
Key Features
- Browser-based processing
- Example inputs
- Copy and download results
- No paid API or signup
Common Use Cases
- Website publishing
- Content review
- SEO maintenance
Privacy
Your supplied content is processed in your browser and is not uploaded by this tool.
Limitations
Analyzes pasted HTML without executing it. Multiple H1 headings are a review prompt, not proof of an SEO error.