Insights for Search. Search Engine Marketing Tips & Search Engine News - Search E. Manually creating a Sitemap - Webmasters/Site owners Help. This article covers general web Sitemaps, which are appropriate for most sites. Google does support some extensions for special Sitemap types. See the list below for specific instructions on how to create these special Sitemaps. To create a Sitemap based on the Sitemap protocol: Create a text file and save it with a .xml extension. Webmaster Tools - Dashboard.