Sitemap Generator to Create HTML and XML Sitemaps. Help search engines index your website. Let A1 Sitemap Generator create your HTML and XML sitemaps, upload sitemaps and ping search engines. Automate all sitemap generator tools. Our website crawler will find all pages within your website as it can handle all kinds of links and redirects. When crawling websites, our sitemap generator supports robots.txt file directives disallow and crawl-delay.