An iframe (inline frame) is an HTML element that allows you to embed another document within a web page. This means you can display content from another source, such as a video, map, or another website, directly on your page without redirecting users. Iframes are commonly used for integrating third-party content, like YouTube videos or Google Maps. Iframes have specific attributes that control their size, borders, and behavior. For example, the src attribute specifies the URL of the content to be displayed. While iframes are useful for enhancing web pages, they can also pose security risks if not used carefully, as they may allow malicious content to be embedded.