Why Articles Need H2–H6 Headings

An article can contain plenty of useful content and still have a structural problem: there are no headings separating the content into meaningful sections. The page may look readable in a browser, but without <h2>, <h3>, or <h4> elements, the HTML has no explicit markers showing where one topic ends and the next begins.

That is why a technical SEO audit may report a warning like this:

The warning does not mean every paragraph needs a heading. It means the article should have a recognizable heading hierarchy, a document outline that readers, screen readers, and search engine crawlers can all follow.

What Is an HTML Heading Element?

An HTML heading is a semantic element that identifies a section of content. HTML provides six heading levels:

<h1>Page title</h1>
<h2>Main section</h2>
<h3>Subsection</h3>
<h4>Subsection within an H3</h4>
<h5>Lower-level section</h5>
<h6>Lower-level section</h6>

For most blog posts and guides, the elements that matter most after the page's primary <h1> are <h2> and <h3>. A simple article might look like this:

<h1>How to Fix Broken Internal Links</h1>
<p>Broken internal links can prevent users and crawlers from reaching important pages.</p>

<h2>Find Broken Links</h2>
<p>Start by crawling the website and identifying links that return error responses.</p>

<h2>Check the Destination</h2>
<p>Decide whether each URL should be restored, redirected, or removed.</p>

<h2>Update Internal Links</h2>
<p>Replace links pointing to invalid URLs with links to the correct destinations.</p>

The headings turn a continuous block of text into an identifiable page structure.

Why Articles Need Section Headings

Headings do several jobs at once. They split content into topics, create a scannable outline, support keyboard and screen reader navigation, and make the relationship between a section label and its paragraphs explicit in the markup.

Headings divide content into topics

Without headings, a long article becomes a stream of paragraphs:

<p>Broken links can affect navigation...</p>
<p>Redirects can also affect...</p>
<p>Internal links should...</p>
<p>Orphan pages can...</p>

<h2>Broken Links</h2>
<p>Broken links can affect navigation...</p>

<h2>Redirects</h2>
<p>Redirects can also affect...</p>

<h2>Internal Links</h2>
<p>Internal links should...</p>

<h2>Orphan Pages</h2>
<p>Orphan pages can...</p>

The second version makes each subject immediately identifiable, both visually and in the DOM.

H2 Is Usually the Starting Point

A common article structure uses one H1 for the page topic, H2 elements for major sections, and H3 elements for subsections that belong to an H2.

For a full version of this structure in practice, see the technical SEO checklist for search and AI.

Does Every Article Need an H2?

Not necessarily. A very short page may not need multiple sections:

<h1>Contact SiteAuditLint</h1>
<p>Contact our team for questions about SiteAuditLint.</p>

Adding artificial headings to a page like this would not improve it. The warning becomes meaningful when an article covers multiple distinct topics or a substantial amount of content without section headings. The goal is not to maximize heading count. The goal is a document structure that is easy to understand.

H2 to H6 Are Semantic Structure, Not Decoration

A common mistake is treating heading tags as visual formatting. Markup such as <h2>RED TEXT</h2> or <h2>Click Here</h2> does not create useful structure just because the text renders larger.

A heading should label the content that follows it. <h2>How to Find Broken Links</h2>, followed by instructions for finding broken links, is a meaningful section heading.

Headings create the content outline

Think of headings as the table of contents for an article. The paragraphs provide the detail, and the headings provide the organization:

Technical SEO Audit
├── Crawlability
│   ├── Robots.txt
│   └── XML Sitemap
├── Indexability
│   ├── Noindex
│   └── Canonical URLs
├── Internal Linking
│   ├── Broken Links
│   └── Orphan Pages
└── Page Optimization
    ├── Title Tags
    └── Meta Descriptions

Without headings, that hierarchy is very hard to recover from the HTML alone.

H2 vs. H3: Choosing the Right Heading Level

Choose heading levels based on the parent and child relationship between sections. An H3 should normally belong to an H2.

<h2>Technical SEO</h2>
<h3>Crawlability</h3>
<h3>Indexability</h3>

<h2>On-Page SEO</h2>
<h3>Titles</h3>
<h3>Meta Descriptions</h3>

Do not pick heading levels by font size

Using <h4> just because it looks smaller than <h2> is not a good reason. CSS controls presentation. HTML communicates structure. You can restyle any level without changing its semantic meaning:

<h2 class="small-heading">Important Information</h2>

Do Not Add Headings Just to Silence an Audit Warning

Fixing a warning should not mean adding meaningless elements. Generic labels add nothing to the outline:

<h2>Information</h2>
<h2>More Information</h2>
<h2>Additional Information</h2>

Instead, name the subjects already present in the content:

<h2>How Broken Links Affect Crawlers</h2>
<h2>How Broken Links Affect Visitors</h2>
<h2>How to Fix Broken Links</h2>

Heading Problems a Site Audit Can Reveal

A website crawler can flag several heading issues beyond a missing H2.

<h2>Main Topic</h2>
<h4>Subtopic</h4>

<h2>Main Topic</h2>
<h3>Subtopic</h3>

Headings and Web Accessibility

Headings are a core part of accessible HTML. Screen reader users commonly navigate a page by jumping between headings, the same way sighted visitors skim bold section titles. A properly nested heading structure lets them understand the organization of the page without listening to every paragraph in sequence.

That is why headings belong in the semantic layer of the page, not only in the visual design.

Headings, Search Engines, and Answer Engines

Search engines use many signals to understand page content, and headings are one part of the overall HTML structure. A useful heading accurately describes the passage beneath it, which makes the relationship between section label and paragraph explicit:

<h2>Broken Internal Links</h2>
<p>Broken internal links point visitors and crawlers toward URLs
that no longer resolve correctly.</p>

Clear section boundaries also help AI search experiences locate a self-contained passage that answers a specific question. For more on this, read Answer Engine Optimization: Definition and Strategies.

Headings are not a place for keyword stuffing. <h2>SEO Audit SEO Tool SEO Audit Software</h2> creates no structure. <h2>Choosing an SEO Audit Tool</h2> is clearer and more useful.

A Practical Heading Structure for SEO Articles

<article>
  <h1>How to Audit Internal Links</h1>
  <p>Introduction...</p>

  <h2>What Are Internal Links?</h2>
  <p>...</p>

  <h2>Common Internal Linking Problems</h2>
  <h3>Broken Links</h3>
  <p>...</p>
  <h3>Orphan Pages</h3>
  <p>...</p>
  <h3>Weak Anchor Text</h3>
  <p>...</p>

  <h2>How to Audit Internal Links</h2>
  <p>...</p>

  <h2>How to Fix Internal Linking Problems</h2>
  <p>...</p>
</article>

The pattern is simple: H1, then H2, then H3. Most articles never need every level from H1 through H6.

How to Fix the "Article Lacks Heading" Warning

Review the content before changing the HTML. The steps below apply whether you edit templates directly or work inside a headless CMS such as Sanity.

Heading structure checklist

If headings exist in the editor but not in the output, the issue may be in rendering. Check how your site is crawled by Google, Bing, and AI bots to confirm what they actually receive.

What a Good Article Structure Looks Like

Frequently Asked Questions