HTML iframe width Attribute
HTML <iframe> tag
Definition and Usage
The width attribute specifies the width of the iframe.
Syntax
Syntax Example
Attribute Values
Value |
Description |
pixels |
Width in pixels (like "100px", or just "100"). |
percent |
Width in percent of the containing element (like "20%"). |
Browser Support

The attribute is supported in all major browsers.
Example
Source |
Output |
<iframe src="demo_iframe.htm"
width="50%"></iframe>
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Try-It-Yourself Demos
iframe
width attribute example
Specify the width of the iframe.
HTML <iframe> tag
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