Key takeaways
- Use one H1 that says what the page is about, close to what people search.
- Use H2s for the main sections and H3s for points inside a section, in order.
- Write headings for readers first: a person should understand the page from the headings alone.
- Headings are not a place to stuff keywords or to style text.
Heading structure is one of the first things I look at in an on-page SEO review. Pages with a clear outline are easier to read, easier to quote and easier to fix later.
What are heading tags?
Heading tags are the HTML elements H1 to H6 that mark the titles and subtitles inside a page. H1 is the main title, H2s are the main sections, H3s are sub-points inside a section, and so on. They are different from the title tag, which is the text that appears in the browser tab and often in Google results.
| Element | What it is | Where people see it |
|---|---|---|
| Title tag | The page title for search engines | Browser tab, often the blue link in Google |
| H1 | The main heading on the page | At the top of the page |
| H2 | Main sections | Throughout the page |
| H3 | Points inside a section | Under an H2 |
Do headings matter for SEO?
Yes, mainly because they make the page clear. Google's SEO Starter Guide recommends breaking content into sections with headings so readers can follow it. Clear headings also help search engines and AI tools understand which part of the page answers which question, which can affect the snippet or the passage they show.
See Google's SEO Starter Guide. Headings do not replace the title tag; Google explains in influencing your title links that the H1 is one of the sources it may use when it rewrites a title.
How many H1 tags should a page have?
One is the clean choice. A single H1 that states what the page is about makes the structure obvious to readers and tools. Technically, a page with more than one H1 is not penalized, but it usually means the design is using headings for styling, which makes the outline confusing.
How to write good H2 and H3 headings
- Make each H2 a section a reader would look for: a question, a step or a topic.
- Use the words your customers use, including the main keyword where it fits naturally.
- Keep the order: H2, then H3 inside it. Do not jump from H2 to H4.
- Put the short answer right after a question heading, then the detail.
- Read only the headings: they should tell the story of the page.
- Do not use a heading just to make text big or bold; use styles for that.
Putting a direct answer under a question heading also helps your snippet, as Google explains in control your snippets. And keep writing for people: Google's helpful content guide asks whether headings describe the content in a helpful way.
What are the most common heading mistakes?
Using the logo or a slogan as the H1, having no H1 at all, using headings only for design, skipping levels, repeating the same keyword in every heading and writing vague headings like "Overview" or "More info". Each one makes the page harder to scan for people and harder to interpret for machines.
Headings and titles work together: a clear title gets the click, clear headings keep the visitor. I cover the title side in how to improve CTR in SEO. Fixing headings across a site is part of my technical SEO and SEO content writing work. As an SEO consultant, I can check yours in a free diagnosis: book it here.
Frequently asked questions
Should the H1 match the title tag?
They can be similar. The title is written for the search result, the H1 for the reader on the page.
Can I use H2s inside the footer?
Better not. Keep headings for the main content so the outline stays clean.
Do headings need keywords?
Use them where they fit naturally. Clarity matters more than repetition.
How long should a heading be?
Short enough to scan, usually one line.
Does my CMS add headings automatically?
Often the page title becomes the H1. Check the template so you do not end up with two.
About the author
Juan José Giraldo is an SEO consultant in Medellín, Colombia, with 5+ years of experience. He works on technical and local SEO for 600+ US car dealerships at Reunion Marketing, an Inc. 5000 agency, and supervises the SEO of 18 US online stores with more than 3 million products at Prontomowers. Read more · LinkedIn.
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