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 |
