In line with W3C's HTML documentation: "A piece is actually a thematic grouping of content material, usually having a heading." Sitemaps needs to be composed in a selected format for Internet crawlers to know them. A vast majority of some time, it needs to be an XML file. They may https://bookmarklethq.com/story18086639/getting-my-https-ppob-co-id-sitemap-html-to-work