H1 Heading

Verifies the presence and uniqueness of the H1 heading tag.

What is this check?

The H1 heading is typically the main headline on a page. It's defined by the `<h1>` tag.

Why is it important?

The H1 tag signals the main topic of your page to both users and search engines. It's a strong relevancy signal.

What is the impact?

Having zero or more than one H1 tag can confuse search engines about your page's primary focus, potentially weakening your ranking for target keywords.

Example Implementation

<body>
  <h1>The Most Important Headline on the Page</h1>
  <p>Page content follows...</p>
</body>