HTML <title> Tag
<!DOCTYPE html>
<html>
<head>
<title>Document title...</title>
</head>
<body>
<p>Page content...</p>
</body>
</html>The above example demonstrates usage of the <title> element. In this example, the title is not displayed in the preview, as it is metadata and is not displayed within the document body. Also, the preview function above is within a nested browsing context, so the title is not displayed in the browser's title bar as would normally be the case.
The <title> element represents the document's title or name.
The <title> element must be located inside the <head> element. There must only be one <title> element.
The <title> element should contain a title that identifies the document even when it's used out of context. This is because this title can appear in many places that the author may not have expected — for example in a user's history or bookmarks, or in search results.