A URL, or Uniform Resource Locator, is the web address used to access information on the internet. It's the string of characters you type into a web browser to visit a website or find a specific file or page. A URL includes the protocol (like HTTP or HTTPS), the domain name (like www.example.com), and often a path (like /page1), which specifies the exact resource on the web server. URLs are essential for navigating the internet, as they provide a clear and accessible way to locate and access various online resources.