Meta tags are used in HTML :

Meta tags in HTML are used by the developer to tell the browser about the page description, author of the template, character set, keywords and many more.
Meta tags are used for search engine optimization to tell the search engine about the page contents.

(meta charset="UTF-8">
(meta name="viewport" content="width=device-width, initial-scale = 1.0">
(meta name="description" content="HTML interview questions">
(meta name="author" content="Author Name">
(meta name="copyright" content="All Rights Reserved">