Using Meta Tags in HTML: Some Basics and Best Practices (Shaumik Daityari)

Metadata is often referred to as ‘data about data’ and one of the ways it’s done on web pages is by means of the tag. The content of meta tags generally describes information about the HTML page which usually cannot be represented by any other HTML tags. In addition to that, the meta tag can also be used to emulate an HTTP response header (like redirection to a different page) and it has attributes like http-equiv and charset, the details of which have been described clearly on the Mozilla Developer Network. (sitepoint.com)