HTML Heading Outline Extractor
Extract H1–H6 headings in document order and flag skipped levels or missing and repeated H1 headings.
Start with your input
Edit the example or replace it with your own text.
How to use HTML Heading Outline Extractor
- Paste the example or your own input.
- Choose the options that match your task.
- Run the tool, review the result, then copy or download it.
When to use HTML Heading Outline Extractor
Inspect the heading structure of a pasted page before publishing an article or reviewing a template. The output lists heading levels, text and IDs in document order, with observations about missing H1 elements, multiple H1 elements and jumps over intermediate levels. It helps reveal a document outline that is hard to notice when headings are styled to look similar.
How to interpret the result
The analysis uses the supplied HTML only and never fetches a page or executes scripts. It includes headings present in the markup even if external CSS would hide them, and it does not inspect shadow roots or generated content. A skipped level is a review prompt rather than an automatic accessibility failure. Heading structure is one part of a usable document and does not predict search ranking or replace an accessibility audit.
Example input
<main><h1>Product guide</h1><h2>Setup</h2><h4>Troubleshooting</h4></main>
What should I check before using the output?
The analysis uses the supplied HTML only and never fetches a page or executes scripts.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.