An HTML sitemap is a clickable list of every page on your site that enhances user experience. Like a directory at a shopping mall, it enables visitors to easily navigate your site by organizing each and every page.
The HTML sitemap lays out all of your site’s pages and can call attention to those that are most important or most relevant for a particular user.
An XML sitemap is a bulleted outlined text version that enables search engines to understand every page on the site, including URLs that were not detected during the initial crawl.