The <h1> to <h6> tags define headers. <h1> defines the largest header. <h6> defines the smallest header.

Differences Between HTML and XHTML

The "align" attribute of the h1 to h6 element is not supported in XHTML 1.0 Strict DTD.

Example

Source

Output

<h1>This is header 1</h1>
<h2>This is header 2</h2>
<h3>This is header 3</h3>
<h4>This is header 4</h4>
<h5>This is header 5</h5>
<h6>This is header 6</h6>

This is header 1

This is header 2

This is header 3

This is header 4

This is header 5

This is header 6

Optional Attributes

DTD indicates in which DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.

Attribute

Value

Description

DTD

align

left
center
right
justify

Specifies the alignment of the text in the header. Deprecated. Use styles instead

Standard Attributes

Event Attributes

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