H
Heading Structure Analyzer
Paste page HTML to visualize its heading hierarchy and get warnings about missing H1s, multiple H1s and skipped heading levels.
Paste page HTML
Outline (5)
- H1Main Title
- H2Section One
- H3Subsection
- H2Section Two
- H4Skipped a level
1 issue
- ⚠ Heading level skips from H2 to H4 (near “Skipped a level”).
🔒 This tool runs entirely in your browser. Your data is never 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.