Heading Structure Analyzer

Fetch or paste HTML, extract h1–h6, visualize the outline and check heading order and skipped levels.

We fetch with basic SSRF protections (http/https only; blocks localhost/private IPs).
Permalink
What we check
  • Presence of a top-level h1.
  • Sequential order (no level skips, e.g., h2 → h4).
  • Empty or overly short/long headings.
  • Visual outline of h1–h6 in document order.

Results

Enter a URL or paste HTML, then click Analyze.

Official guidance & references

FAQs

HTML allows multiple h1s, but a single, clear page title is easier for users and tools. Focus on clarity and hierarchy.

Don’t jump from h2 to h4 without an h3 sibling level in between. Keep levels increasing or decreasing by one as you nest sections.

Headings primarily improve accessibility and comprehension. Clear structure can indirectly help SEO by making content easier to parse and link to.

Use semantic heading tags (h1–h6) for structure, not just CSS styling. Screen readers and tools rely on headings for navigation.

Why this output matters

Heading hierarchy helps users, assistive technology and search engines understand how a page is organized. The output helps SEO and content teams catch structural problems that reduce clarity, accessibility and maintainability.

Related SEO tools

View SEO tools
SEO Health Audit
Run a quick technical SEO health check and surface issues that can limit organic acquisition.
SERP Snippet Simulator
Preview and refine page titles and meta descriptions for desktop and mobile search results.
Word Count & Readability Tester
Measure word count, reading time and multiple readability scores for landing pages and content.
URL Slug Generator
Generate clean, consistent and search-friendly URL slugs for content and landing pages.
Alt Text Checker
Audit image alt text for missing, generic or weak descriptions across a web page.