An iframe, or inline frame, is an HTML document embedded inside another HTML document on a website. The iframe HTML element is often used to insert
content from another source, such as an advertisement, into a web page.
In the context of web accessibility, <iframe>
's should have a title
attribute. This is because screen readers for
the visually impaired use this title to help users understand the content of the iframe.
Without a title, it can be difficult for these users to understand the context or purpose of the iframe’s content.