Herein is described an implementation of a Web address converter, which helps dynamic Web sites get the attention of spiders of Internet search engines. With the Web address converter, requests from Web browsers using static addresses access corresponding dynamic Web pages and requests from search engines generate an instance of a Web page having links with static addresses pointing to corresponding dynamic Web pages. The Web address converter performs both Dynamic-to-Static (D-to-S) address conversion and Static-to-Dynamic (S-to-D) address conversion. D-to-S address conversion is done when generating a spider-friendly main page for a spider of a search engine to crawl. S-to-D address conversion is used when a browser uses a static address to access a corresponding dynamic Web page. The static address that the browser uses was originally created when the spider-friendly main page was generated.