An iframe (short for inline frame) is an HTML element that allows an external webpage to be embedded in an HTML document. Unlike traditional frames, which were used to create the structure of a webpage, iframes can be inserted anywhere within a webpage layout.

An iframe can be inserted into an HTML document using the iframe tag, as shown in the example below:

<iframe src="http://sharpened.com/example.php" width="728" height="90"></iframe>