From HTML Wiki
The <title> element represents the document's title or name.
- Authors should use titles that identify their documents even when they are used out of context, for example in a user's history or bookmarks, or in search results.
- The document's title is often different from its first heading, since the first heading does not have to stand alone when taken out of context.
See global attributes.
<!doctype html> <html lang=en> <head> <meta charset=utf-8> <title>The HTML Document</title> </head> <body> <p>The HTML content</p> </body> </html>
The HTML5 specification defines the <title> element in 4.2.2 The title element.