A MIME Type (Multipurpose Internet Mail Extensions) is a standard way to indicate the nature and format of a file on the internet. It helps web browsers and servers understand how to handle different types of content, such as images, videos, or text. For example, a file with the MIME type `image/jpeg` is recognized as a JPEG image, while `text/html` indicates an HTML document. MIME types consist of a primary type and a sub-type, separated by a slash. Common primary types include text, image, audio, and application. Each MIME type helps ensure that files are processed correctly, enhancing the user experience on the web.