What is the purpose of the <base> element in a document?

The <base> element specifies the base URL for all relative URLs in a document.

It ensures that all relative links are resolved against this base URL, providing a consistent reference point for resources. Without it, relative URLs are resolved against the document's location. This is particularly useful when the document is moved to a different directory or server, as it maintains the integrity of the links.

<base href="https://www.example.com/">