HTML5 <iframe> Tag


<iframe src=""></iframe>

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Definition and Usage

The iframe element creates an inline frame that contains another document.

Differences Between HTML 4.01 and HTML5

HTML5 has some new attributes, and some HTML 4.01 attributes are not supported in HTML5.

Tips and Notes

Tip: Use CSS to style the iframe, even to include scrollbars.


New : New in HTML5.

Attribute Value Description
frameborder 1
Not supported in HTML5
height pixels
Defines the height of the iframe.
longdesc URL Not supported in HTML5
marginheight pixels Not supported in HTML5
marginwidth pixels Not supported in HTML5
name framename Specifies a unique name of the iframe.
sandboxNew allow-forms
Defines restrictions to the frame content.
scrolling yes
Not supported in HTML5
seamlessNew seamless If present, the iframe should appear as if it is part of the document the iframe is in.
src URL The URL of the document to show in the iframe
srcdocNew HTML The HTML of the document showing in the iframe
width pixels
Defines the width of the iframe.

Standard Attributes

The <iframe> tag also supports the Standard Attributes in HTML5.

Event Attributes

The <iframe> tag also supports the Event Attributes in HTML5.