📑 Heading Structure Analyzer
Paste your HTML content and analyze the heading hierarchy for SEO issues, accessibility problems, and best practice compliance.
How to Use the Heading Analyzer
Paste your HTML source code into the textarea and click Analyze Headings. The tool extracts all heading tags (H1–H6), builds a visual hierarchy tree, detects common SEO issues, and provides a scored checklist of heading best practices.
What This Tool Checks
- Missing H1 — Every page should have exactly one H1 tag.
- Multiple H1s — Having more than one H1 can dilute your main topic signal.
- Skipped levels — Jumping from H1 to H3 without H2 breaks the content hierarchy.
- Empty headings — Headings with no text content provide no SEO value.
- Long headings — Headings over 70 characters may be too verbose for effective scanning.
- Image-only headings — Headings containing only images without alt text miss important text signals.
Heading Best Practices for SEO
- Use one H1 per page containing your primary keyword.
- Follow a logical order: H1 → H2 → H3 (never skip levels).
- Keep headings concise — under 70 characters is ideal.
- Use headings to outline content structure, not for visual styling.
- Include target keywords naturally in H2 and H3 subheadings.
Frequently Asked Questions
Paste your HTML or URL content and the tool scans every H1 through H6 tag. It maps out the heading hierarchy, flags missing levels, duplicate H1s, and skipped nesting so you can fix structural issues before publishing.
Yes. The analysis runs entirely in your browser using JavaScript. No data is sent to any server, so your unpublished content stays completely private.
Search engines use headings to understand page structure and topic relevance. A clear H1 → H2 → H3 hierarchy helps crawlers index your content correctly and can improve rankings for target keywords.
The biggest mistakes are using multiple H1 tags on one page, skipping heading levels (e.g., jumping from H2 to H4), using headings purely for styling, and writing vague headings that don't include relevant keywords.
Best practice is exactly one H1 per page. It should clearly describe the page's main topic and ideally include your primary keyword. Multiple H1s can confuse search engines about which topic is most important.