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What Is Header Tags (H1, H2, H3)?
SEO
Updated 18 September 2026
Quick Answer
Header tags (H1, H2, H3) are HTML elements that structure a page's headings hierarchically — the H1 being the main title, H2s major sections, H3s sub-sections — helping both readers and search engines understand content organization.
Header Tags vs. Title Tag — What's the Difference?
| Header Tags | Title Tag | |
|---|---|---|
| What it is | The visible heading structure within page content | The title shown in search results and the browser tab |
Why It Matters
- Clear heading structure helps visitors scan and understand content quickly, and helps search engines understand the page's organization and key topics.
- Skipping levels or using multiple H1s on one page can confuse both readers and search engines about the page's actual structure.
How It Works
- One H1 is used per page, matching the main topic.
- H2s divide the page into major sections, with H3s for sub-sections within those.
- This hierarchy should follow a logical order without skipping levels.
Key Takeaways
- Header tags structure a page's headings hierarchically, from H1 down to H3 and beyond.
- One H1 per page is standard best practice.
- Clear structure helps both readers scanning content and search engines understanding it.
Frequently Asked Questions
Should a page have more than one H1?
Generally no — one H1 per page, clearly stating the main topic, is the standard best practice.
Do header tags affect SEO?
Yes — they help search engines understand a page's structure and key topics, alongside helping readers scan content.
What's the difference between an H1 and a title tag?
The H1 is the visible heading within the page content; the title tag is what shows in search results and the browser tab — they're often similar but not identical.