Meta can be called as data about data. It means it holds the information of other information but the information is in the form of raw data. Meta Tag in HTML allows you to provide Metadata of your HTML page.
What is HTML Meta Tag
Meta Tags are text snippets, in the form of data which portrays your page's content. These meta tags and its' value do not emerge out on the web page you will create, however it can be seen in the source code of your HTML page. It is to be noted that meta tags act as tiny content descriptors which allows you to convey to the search engines some information about what your web page is about and what keywords it has.
Other than that, metadata can be used by browsers, web services, and APIs to take data regarding a particular page. It is to be noted that the HTML <meta> tag comes within the <head> tag. Moreover, meta tags get passed in the form of a name-value pair.
<!DOCTYPE html> <head> <title> Example for Meta Tag </title> <meta name = "keyword" content = "html, css, jQuery"> </head> <body> Welcome to w3schools.in<br> You are learning about HTML Meta Tags </body> </html>
Meta Tags are also used to provide a small description to your documents, which becomes a useful component for search engines. Something like this:
<meta name = "description" content = "HTML Meta Tag - Meta can be called as data about data." >
Moreover, Meta tags are also used for redirecting pages as well. In this case, the duration can also be set to be redirected to a specific number of second.
<meta http-equiv = "refresh" content="4; url = 'http://example.com' ">