The <iframe> HTML element is used to embed another HTML document or web page within the current document. It allows you to display content from a different source or URL within a specific area of your webpage.

Here’s an example of how to use the <iframe> element:

<iframe src="https://www.example.com" width="500" height="300"></iframe>

In this example, the <iframe> element is used to embed the webpage from https://www.example.com within the current document. The src attribute specifies the URL of the content to be displayed. You can also specify the width and height of the iframe using the width and height attributes.

The content within the <iframe> is rendered within a rectangular frame on your webpage, allowing users to interact with the embedded content without leaving your site. It can be used to display external web pages, maps, videos, or other interactive content from third-party sources.

The <iframe> element provides seamless integration of external content into your webpage. However, it’s important to ensure that you embed trusted sources to maintain security and prevent malicious activities.

Additionally, you can further customize the behavior and appearance of the <iframe> using CSS styles and other attributes, such as allowfullscreen to enable fullscreen mode for videos or interactive content.

In summary, the <iframe> element is used to embed external web content within a webpage. It allows you to display content from a different source or URL within a designated area. Proper usage and careful selection of trusted sources are important to maintain security and provide a seamless user experience.