What is the function of the <footer> tag in HTML?

The <footer> tag in HTML is specifically designed to define the footer section of a document or a section within it. This section typically contains information such as the author of the document, copyright notices, links to related documents, contact details, or other relevant metadata that pertains to the content of the page or section. Using the <footer> tag helps in semantically structuring the HTML document, which enhances both accessibility and SEO. Screen readers and search engines can better understand the layout and purpose of the content when semantic tags are used correctly. By clearly delineating the footer, developers can ensure that this information is easy to find and appropriately understood by users and technologies interpreting the webpage. The emphasis on organization and structure aligns the footer with the overall design of HTML layout and content hierarchy while serving the unique purpose of conveying supplemental information related to the document or section.