List every H1 to H6 from a page and check that it has a single H1. It runs in your browser, so nothing you enter is uploaded.
How to use it
- Paste or type your input in the box.
- The result appears below. Press Run if it does not update.
- Press Copy result and paste it where you need it.
Questions about this tool
Why does heading order matter?
Clear headings help readers and search engines understand your page structure.