An iframe is a section of a web page that contains content that comes from another page. It’s a page within a page. Iframes are typically used to pull in content from third parties. For example, you can set up iframes on your website to display banner ads from Google Ads or another ad network. Iframes are different from framesets (also called just “frames”), which were used in the early days of the internet to make page layouts easier and navigation consistent.