Heading Structure (H1–H6) Analyzer
See a page's H1–H6 hierarchy as a tree and find missing H1s, multiple H1s and skipped levels.
Only the HTML you paste is analyzed. This tool never fetches websites.
Why heading hierarchy matters
H1 to H6 tags form the skeleton of a page's content. A logical heading structure helps screen reader users navigate and helps search engines understand the page's topics and subtopics.
What the analysis shows
- An indented tree of every heading by level
- Missing H1 warning
- Multiple H1 warning
- Skipped levels (for example jumping from H2 straight to H4)
- Empty headings
How to use it
Copy your page's HTML source and paste it. The tool only processes the HTML you paste and never connects to a website, so you can test unpublished pages and templates too.
How to use Heading Structure (H1–H6) Analyzer
- Copy the page's HTML source (Ctrl+U in the browser).
- Paste it into the analysis box.
- Review the heading tree and warnings.
- Fix the problem headings in your template.
Why use this tool?
Makes heading problems visible in seconds during SEO audits and accessibility testing.
FAQ
Is more than one H1 always wrong?
HTML allows it, but a single H1 describing the page is the clearest structure for accessibility and SEO, so the tool flags it as a warning.
Should my logo be an H1?
No. The H1 should describe the page's main topic; using it for the logo repeats the same heading on every page.
Can I enter a page URL?
No, the tool only analyses the HTML you paste.
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