A footer is a section located at the bottom of a webpage or document. It typically contains important information such as copyright notices, contact details, and links to privacy policies or terms of service. Footers help users navigate a site and find essential information quickly. In web design, footers can also include social media icons, site maps, or subscription forms. They serve as a consistent element across multiple pages, providing a familiar structure for users. A well-designed footer enhances user experience and ensures that critical information is easily accessible.