How to Use Heading Structure Analyzer
Paste page HTML to visualize its heading hierarchy and get warnings about missing H1s, multiple H1s and skipped heading levels.
Open the Heading Structure Analyzer tool →What is Heading Structure Analyzer?
Extract an H1–H6 outline from HTML and flag structure issues. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use Heading Structure Analyzer
- Open the Heading Structure Analyzer tool.
- Paste or type your input.
- Set any options provided.
- Copy the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
What does it check?
It extracts your H1-H6 headings into an outline and flags issues like a missing H1 or skipped heading levels.
Why does heading structure matter?
A logical heading hierarchy helps both search engines and screen-reader users understand your page.
Do I paste HTML or a URL?
Paste your page's HTML, and it builds the outline from the heading tags it finds.
Ready to try it?
Open Heading Structure Analyzer →