Heading Structure Checker

Headings give a page its outline. The H1 states the main topic, H2 headings mark major sections, and H3 headings mark smaller points inside those sections. A clear outline helps readers scan a page and helps search engines understand its structure.

This tool reads the HTML you paste and lists headings in order. It flags a missing H1, more than one H1, and any place where a level is skipped, for example an H3 straight after an H1.

How to Use This Tool

1. Paste your HTML: paste a full page or just the content section.
2. Click Check Headings: read the heading list in order.
3. Fix flagged issues: add a missing H1, merge extra H1 tags, or fill skipped levels.
4. Check again: paste the fixed HTML and confirm no issues remain.

Good Practice Tips

• One H1 per page: the H1 should match the main topic of the page.
• Do not skip levels: go from H1 to H2 to H3 in order, without jumping a level.
• Headings are not styling: do not pick a heading level just because you like its size. Use CSS for size.
• Keep headings descriptive: a reader should grasp the section topic from the heading alone.