An absolute URL is a complete and unique address for a webpage or resource on the internet. It includes the protocol (e.g., HTTP or HTTPS), domain name, and optional path and query string. For example,
https://www.example.com/page.html is an absolute URL. This is different from a relative URL, which only provides the path and query string without the protocol and domain name. Absolute URLs are essential for linking to external resources and ensuring that users are directed to the correct location on the web.