URLs, or Uniform Resource Locators, serve as web addresses. They come in various types, each with distinct purposes. First, there are HTTP/HTTPS URLs, commonly used for websites like "http://www.example.com". Then, FTP URLs facilitate file transfers, such as "ftp://ftp.example.com". Additionally, mailto URLs initiate email messages, as in "mailto:[email protected]". File URLs point https://www.cwaf.jp/mt/mt4i.cgi?id=2&mode=redirect&no=68&ref_eid=66&url=https%3A%2F%2Fcomputerkrayzee.co.uk/data-recovery-service-london.php