Definition and Usage

The <h1> to <h6> tags are used to define HTML headings. The <h1> tag defines the most important heading, while the <h6> tag defines the least important heading.

Example ```html

This is heading 1

This is heading 2

This is heading 3

This is heading 4

This is heading 5

This is heading 6

```

Browser Support

The <h1> to <h6> tags have the following browser support:

| Browser |

|

|

|

|

|

| | --- | --- | --- | --- | --- | --- | --- | | Chrome | Yes | Yes | Yes | Yes | Yes | Yes | | Firefox | Yes | Yes | Yes | Yes | Yes | Yes | | Safari | Yes | Yes | Yes | Yes | Yes | Yes | | Edge | Yes | Yes | Yes | Yes | Yes | Yes |

Global Attributes

The <h1> to <h6> tags also support the Global Attributes in HTML, which include:

• align
• bgcolor
• border
• cellpadding
• cellspacing
• frame
• noembed

Example ```html

This is heading 1

```

Event Attributes

The <h1> to <h6> tags also support the Event Attributes in HTML, which include:

• onclick
• ondblclick
• onmousedown
• onmouseup

Example ```html

This is heading 2

```

Related Pages

For more information on HTML headings, see the following pages:

• HTML tutorial
• HTML DOM reference

Try it Yourself!

Try out the examples above and experiment with different values for the align, bgcolor, frame, etc. attributes to see how they affect the appearance of your headings.

Related Examples

• CSS example
• JavaScript example

Related References

• HTML reference
• CSS reference

: The HTML Section Heading elements - MDN] (https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/Heading_Elements)
- [What is an H1 Tag? SEO Best Practices - Ahrefs] (https://ahrefs.com/blog/h1-tag/)
- [USCIS] (https://www.uscis.gov/newsroom/alerts/h-1b-faq)
- [H1 Tag Best Practices: Definition, Strategy, and Examples] (https://backlinko.com/h1-tag)
- [What Is an H1 Tag? Why It Matters & Best Practices for SEO] (https://www.semrush.com/blog/h1-tag/?msockid=2e31147c47936783107302f8463566f6)
- [What is an H1 Tag: A Beginner's Guide With Best Practices] (https://bloggerspassion.com/h1-tag/)
- [What Is An H1 Heading? And Why They Still Matter In 2025] (https://www.laurajawadmarketing.com/blog/what-is-an-h1-heading/)
- [Header Tags: A Simple (But Complete) Guide To H1, H2 and H3 …] (https://seosherpa.com/header-tags/)