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by Ian Lloyd

width (HTML attribute)

Browser support full matrix
IE5.5+ FF1+ Saf1.3+ Op9.2+
Full Full Full Full
Spec
Depr. Version
No HTML 4.01
width="width of window in pixels or percentage"

Example

The iframe's width set to 400 pixels

<iframe src="iframe-content.html" width="400"
height="200" frameborder="1">
<p>Your browser does not support iframes.
That kinda sucks, eh?</p>
</iframe>

Description

As the iframe is ‘free-floating’, and not governed by the height or width of the parent window (as normal frames inside a frameset are), you need to let the browser know how wide it should be on the page (if no width is specified, the browser will apply a value of around 300 pixels). Note that you can also use CSS to set the width of the iframe, which is the preferred method for styling this element.

Value

A number representing the width of the iframe in pixels or as a percentage.

Compatibility

IE5.5Full
6.0Full
7.0Full
Firefox1.0Full
1.5Full
2.0Full
Safari1.3Full
2.0Full
3.0Full
Opera9.2Full

Every browser listed supports this attribute.

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