Why should I have only one H1 tag per page?

The H1 tag signals the main topic of the page to both search engines and users. Having multiple H1 tags dilutes this signal and makes it unclear what the page is primarily about. While HTML5 technically allows multiple H1s in sectioning elements, SEO best practice is to use exactly one H1 per page that includes your primary keyword.

What does "skipped heading levels" mean?

Skipped heading levels occur when you jump from H1 to H3 without an H2, or from H2 to H4 without an H3. This breaks the logical document outline and confuses both search engines and screen readers. Headings should follow a sequential hierarchy: H1 → H2 → H3, creating a clear content outline like a table of contents.

Do heading tags directly affect SEO rankings?

Heading tags are a moderate ranking signal. Google uses them to understand your page structure and topic relevance. A well-structured heading hierarchy with relevant keywords helps search engines categorize your content accurately. More importantly, good heading structure improves user experience and accessibility, which indirectly boosts SEO through better engagement metrics.

How do heading tags affect accessibility?

Screen readers use heading tags to navigate pages — users can jump between headings to find content quickly. Skipped levels, missing headings, or headings used purely for styling (not structure) make it difficult or impossible for visually impaired users to navigate your page. Proper heading structure is a requirement for WCAG accessibility compliance.

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Heading Structure Checker

Check if your heading structure helps or hurts your SEO. Skipped levels, missing H1 tags, and broken hierarchy confuse Google about what your page is actually about.

How It Works

Three steps. Zero setup. Instant results.

Enter your URL

Paste any page URL into the tool. No signup or account needed.

See what's broken

Get a clear list of issues ranked by severity, with plain-English explanations.

Fix and ship

What This Tool Checks

Heading tags (H1-H6) are the outline of your page. They tell search engines and screen readers how your content is structured. A missing H1, skipped heading levels, or multiple H1 tags can confuse Google about what your page is actually about — and make your site inaccessible to users with screen readers. This tool checks your entire heading hierarchy in seconds.

Exactly one H1 tag per page

No skipped heading levels (e.g., H1 → H3)

Logical heading hierarchy and nesting

Empty or missing heading text

Heading length and keyword usage

Accessibility compliance for screen readers

Read the full guide →