What an H1 does
The H1 labels the main content. It is part of the heading hierarchy: H2 headings introduce major sections beneath it, while H3 headings subdivide those sections. That hierarchy lets readers scan quickly and gives assistive technology a meaningful outline instead of a collection of visually large but structurally unrelated text.
Search engines do not treat the H1 as a magic ranking switch. Its value is clarity. A heading that names the real topic reinforces the page's visible purpose and makes it easier to determine whether the content answers a query.
H1 tag
Visible in the page body. It tells someone who has opened the page what the page is mainly about.
<h1>Website Page Weight Checker</h1>Title tag
Stored in the document head. It can appear in the browser tab and may be used as a search-result title link.
<title>Website Page Weight Checker | PageLens AI</title>How to write a useful H1
- Describe the page's specific topic, product or outcome in natural language.
- Use one obvious main heading for ordinary marketing and article pages.
- Keep it visible and available in crawler-readable HTML rather than embedding it in an image.
- Align it with the search intent, title tag and the content the page actually delivers.
- Use H2 and H3 headings for sections instead of styling every heading as another H1.
How to find the H1 on a page
The quickest route is the free H1 tag checker. You can also open developer tools and search the Elements panel for <h1. When a site renders headings with JavaScript, inspect the final DOM and accessibility tree, not only the original page source.
Frequently asked questions
- What is an H1 tag in HTML?
- An H1 is the highest-level HTML heading on a page. It usually labels the page's main topic or purpose and helps visitors, assistive technology and search systems understand the content structure.
- Is an H1 the same as a title tag?
- No. The H1 is a visible heading in the page body. The title tag lives in the document head and commonly appears in browser tabs and search results. They should support the same intent without needing to be identical.
- How many H1 tags should a page have?
- One clear H1 is the most reliable convention for ordinary marketing, product and article pages. More complex documents can be valid, but multiple competing main headings often make the hierarchy harder to understand.
- How do I find the H1 tag on a page?
- Use the PageLens AI H1 checker, inspect the page's HTML for an h1 element, or open the browser accessibility tree. Check the rendered result too, because JavaScript can change the final heading structure.
Check the live page, not just the template.
PageLens reads the public result and shows the heading signal a visitor or crawler can encounter. Fix the page, deploy it and check again.
Run the H1 checker