Site map with a special format; normally as an XML document but can also be sent to Google as a text file. Exclusively designed for Google. Google itself provides the tool to generate a Google Sitemap. It helps Google index more pages within a website and alerts you when the content of existing web pages have been edited. Every website that wants its pages to be included in the Google search engine must have a Google Sitmap. See The Google Sitemap definition for a more detailed explanation.