width (HTML attribute)

Spec
Depr. Version
No HTML 2
Browser support (more…)
IE5.5+ FF1+ SA1.3+ OP9.2+ CH2+
Full Full Full Full Full

Syntax

width=" { number | percentage } "

Description

An image doesn’t require a width attribute but, like the height attribute, width has its uses (refer to the advantages set out in the height attribute reference).

If the width attribute is set by itself, but no height attribute is set, the image will be rescaled proportionally. In every other respect, the width attribute is identical in usage and behavior to the height attribute.

Example

Here, the width attribute is set to "300":

<img src="giant-prawn.jpg" alt="The Giant Prawn at Ballina"
    width="300"/>

Value

This attribute takes as its value a number representing the width of the image in pixels, or a percentage of the containing element.

Compatibility

Internet Explorer Firefox Safari Opera Chrome
5.5 6.0 7.0 8.0 1.0 1.5 2.0 3.0 3.5 1.3 2.0 3.1 4.0 9.2 9.5 10.0 2.0
Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full

It causes no compatibility issues, and has excellent support across all tested browsers.

User-contributed notes

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