<base>

The <base> tag defines a base URL and/or a default target for all links in an HTML page.

It is declared within the <head> tag so that it can become a common reference for all elements that redirect the user, such as the <a>, <img>, or <link> tags, for example.

Structure and syntax of the <base> tag

Basic structure and syntax

The <base> tag is a self-closing tag, meaning it does not contain any content and does not have a closing tag: it closes itself.

It always follows this structure:

<base href="[base URL]">

At a minimum, the href attribute is used to define the base URL for all relative links on the current page.

Usage example

Let's take a small example!

<!DOCTYPE html>
<html lang="en">
<head>
  <base href="https://www.believemy.com" target="_blank">
</head>
<body>
  <a href="/formations">View trainings</a>
</body>
</html>

In this example:

• the original URL is /formations;
• the final URL will be https://believemy.com/formations.

Attributes

The <base> tag can be used to define both the base URL and the default target for links.

Browser compatibility

The <base> instruction is compatible with all browsers.