Heading structure checker

What the heading structure checker does

This tool fetches a webpage and extracts all H1 through H6 headings in the order they appear. It reports the total count of headings found, giving you a quick picture of how the page organizes its content and whether the heading outline is complete.

Headings are the skeleton of a page. They tell readers what each section covers and help assistive technology navigate the document. For search engines, headings provide context about the topics a page addresses and how those topics relate to each other. A page with a clear heading outline is easier to scan, easier to understand, and easier to evaluate.

Why heading hierarchy matters

HTML defines six heading levels, from H1 to H6. The intended pattern is hierarchical: an H1 introduces the page topic, H2s mark major sections, H3s mark subsections within them, and so on. When levels are skipped or used only for visual size, the logical outline breaks. Screen readers and other tools rely on this outline to let users jump between sections, so a broken hierarchy harms accessibility as well as clarity.

There is no strict rule that a page must have exactly one H1, but a single clear H1 that describes the page topic is the most common and most predictable pattern. Multiple H1s are technically valid in HTML5, yet they can make the page's main topic ambiguous. The more important question is whether the heading text actually describes the content beneath it, rather than serving as decoration.

How to interpret the results

The total heading count is a starting signal, not a verdict. A very low count on a long article may mean the content is an undifferentiated wall of text. A very high count on a short page may mean headings are being used for styling or repeated navigation labels. Cross-reference the count with the page's actual length and purpose.

"p" => "Look for skipped levels: an H2 followed directly by an H4 suggests a missing structural step or a heading used only to get a smaller font size. Check whether headings contain meaningful, descriptive text rather than generic labels like \"Read more\" or \"Section 1\". Also watch for headings that repeat the same phrase, which adds little information for readers or crawlers.",

Common heading mistakes

• Using headings for visual styling. If a line needs to look bigger or bolder, use CSS, not a heading tag. Headings carry structural meaning.
• Skipping levels. Jumping from H1 to H4 confuses the outline. Use levels in order.
• Empty or generic headings. A heading should describe the section that follows it.
• Keyword stuffing. Repeating the same keyword in every heading reads poorly and does not help rankings.
• Headings inside navigation or widgets. Decorative headings in sidebars and footers can inflate the count without reflecting the main content.

Practical workflow

Run the checker on a representative page, note the total, then read the headings in order as if they were a table of contents. If that outline does not make sense on its own, the page structure needs work. Fix the hierarchy first, then refine the wording of each heading so it clearly describes its section. Repeat the check on template pages, since a flawed template propagates the same issue across many URLs.

Limitations

The tool extracts headings from the HTML it receives. Content rendered only by client-side JavaScript may not appear if it is not present in the initial response. The checker also does not judge whether the heading text is relevant to search intent; that requires human review.