H1–H6 Structure Checker
Paste HTML and instantly audit your page heading outline and structure.
Tip: View page source, copy the main content area, then paste here.
Headings found
0
H1 0 · H2 0 · H3 0 · H4 0 · H5 0 · H6 0
Warnings
- No headings found. Paste HTML that includes H1 to H6 tags.
- No H1 found. Most pages should have exactly one H1.
Outline preview
Paste HTML to generate an outline.
Heading list
No headings yet. Try pasting HTML that contains H1 to H6 tags.