The <h1> - <h6> tags display headings of different sizes.
The <h1> tag is the largest heading, and <h6> is the smallest.
Six headings from the largest (<h1>) to smallest (<h6>).
<h1>This is heading 1</h1>
<h2>This is heading 2</h2>
<h3>This is heading 3</h3>
<h4>This is heading 4</h4>
<h5>This is heading 5</h5>
<h6>This is heading 6</h6>
h1 = heading level 1h2 = heading level 2h3 = heading level 3h4 = heading level 4h5 = heading level 5h6 = heading level 6
The <h1> to <h6> tags display HTML headings.
The <h1> tag is the most important heading with the largest font.
And the <h6> tag is the least important with the smallest font.
Note: There can be only one <h1> tag on a web page.
The other headings do not have this limitation.
These <h1> to <h6> elements are displayed from most to least important.
They are styled with increased transparency (decreased opacity) as they decrease in importance.
<h1 style="opacity:1.0">This is heading 1</h1>
<h2 style="opacity:0.9">This is heading 2</h2>
<h3 style="opacity:0.8">This is heading 3</h3>
<h4 style="opacity:0.6">This is heading 4</h4>
<h5 style="opacity:0.4">This is heading 5</h5>
<h6 style="opacity:0.2">This is heading 6</h6>
The <h1> to <h6> elements have no attributes, but they do accept global attributes.
The following are the most commonly used.
| Attribute | Value | Description |
|---|---|---|
| id | value | Provides the h1 to h6 element with a unique identifier. |
| class | classnames | Assigns one or more classnames to the h1 to h6 element. |
| style | CSS-values | Assigns CSS style values to the h1 to h6 element. |
For additional global attributes see our global attributes list.
Do not use the attribute listed below. It is no longer valid on the h1-h6 tags in HTML5.
| Attribute | Description | Alternative |
|---|---|---|
align |
Aligns the content to the h1-h6 tags. | CSS text-align |
The <h1> to <h6> tags help you organize your documents -- each level with a corresponding font size.
The <h1> tag has the highest level in the hierarchy and should only be used once on a page.
The other heading tags serve as subtitles and can be used multiple times.
These tags also help with SEO (seach engine optimization).
Tip: Don't confuse <head>, <header>,
and <h1> - <h6> (heading) tags. They are all very different.
The <h1> - <h6> tags are part of a group of tags
that are used to create and format text documents.
This group is referred to as the Text tag group.
Together, they allow you to create comprehensive HTML text documents.
Here is a list of text tags.
| Element | Description |
|---|---|
| <h1>-<h6> | Defines text headings in 6 different sizes |
| <p> | Creates a paragraph |
| <span> | Container for one or more inline text elements |
| <br> | Creates a line break |
| <sup> | Specifies superscript text |
| <sub> | Specifies subscripted text |
| <u> | Specifies underlined text |
| <i> | Specifies italic text |
| <b> | Specifies bold text |
| <em> | Marks text that needs emphasis |
| <strong> | Indicates text that is important or with high urgency |
| <del> | Defines deleted text |
| <ins> | Defines inserted text |
| <ruby> | Represents a small annotation with pronunciation of text |
| <kbd> | Specifies keyboard input, such as, CTRL or ALT |
| <wbr> | Specifies a preferred word-break location for long words |
Here is when <h1> to <h6> support started for each browser:
 Chrome
|
1.0 | Sep 2008 |
 Firefox
|
1.0 | Sep 2002 |
 IE/Edge
|
1.0 | Aug 1995 |
 Opera
|
1.0 | Jan 2006 |
 Safari
|
1.0 | Jan 2003 |
