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HTML width Attribute


Definition and Usage

The width attribute specifies the width of the element, in pixels.

Note: For input elements, the width attribute is used only with <input type="image">.


Applies to

The width attribute can be used on the following elements:

Elements Attribute
<canvas> width
<embed> width
<iframe> width
<img> width
<input> width
<object> width
<video> width

Examples

Canvas Example

A <canvas> element with a height and width of 200 pixels:

<canvas id="myCanvas" width="200" height="200" style="border:1px solid">
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Embed Example

A flash animation with a height and width of 200 pixels:

<embed src="helloworld.swf" width="200" height="200">
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Iframe Example

An <iframe> with a specified height and width of 200 pixels:

<iframe src="/default.asp" width="200" height="200"></iframe>
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Img Example

An image with a height and a width of 42 pixels:

<img src="smiley.gif" alt="Smiley face" height="42" width="42">
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Input Example

Define an image as the submit button, with height and width attributes:

<form action="/action_page.php">
  First name: <input type="text" name="fname"><br>
  Last name: <input type="text" name="lname"><br>
  <input type="image" src="img_submit.gif" alt="Submit" width="48" height="48">
</form>
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Object Example

A flash animation with a height and width of 400 pixels::

<object data="helloworld.swf" width="400" height="400"></object>
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Video Example

A video player with a specified width and height:

<video width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>
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Browser Support

The width attribute has the following browser support for each element:

Element
canvas 4.0 9.0 2.0 3.1 9.0
embed Yes Yes Yes Yes Yes
iframe Yes Yes Yes Yes Yes
img Yes Yes Yes Yes Yes
input 1.0 Yes 16.0 Yes 1.0
object Yes Yes Yes Yes Yes
width Yes Yes Yes Yes Yes