SEO glossary · H

H1 Tag

What is an H1 Tag? Definition and Meaning

An H1 tag is the HTML element for a page’s main heading, <h1>. It is usually the title visitors see at the top of the page, and it tells both readers and search engines what the page is about. In short, the H1 tag definition is the first-level heading in HTML: “H1” means “heading 1”, the top of the six heading levels from <h1> to <h6>. It is also called the H1 heading or H1 header, and it is not the same as the title tag, which shows in the browser tab and in search results.

What it looks like

<h1>Local SEO for Dentists</h1>

Why the H1 matters

  • Readers use it to check that they are on the right page.
  • Search engines treat it as a strong signal of the page’s topic, and Google sometimes uses the H1 as the title of the search result.
  • Screen reader users often jump to the H1 to find where the main content starts.

How to write a good H1

  • Describe the page’s main topic clearly, with the main keyword where it fits naturally.
  • Keep it close in meaning to the title tag. The wording can differ: the title tag is written to earn the click in search results, the H1 for people already on the page.
  • Keep it fairly short, with the most important words first.
  • Give every page a unique H1.

How many H1s should a page have?

One is best practice. Google has said that more than one H1 won’t hurt your rankings, but a single clear H1 makes the structure easier to follow for readers and assistive technology. Use H2 to H6 for the sections below it, in order; see heading tags.

Common mistakes

  • No H1 at all, or the logo or a tagline marked up as the H1
  • The same H1 on many pages
  • An H1 that doesn’t match what the page is actually about
  • Using an H1 just to make text big; use CSS for styling

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