A site map is a single document that links to all other documents within a website. Essentially, it provides an overview of all of the site’s content. Over the years, as website sizes have increased, sitemaps have become instrument in search engine optimization (SEO). Google introduced a tool called Google Sitemaps that allows Web content providers to publish their sitemaps. Other search engines now also support these sitemaps.
The standard format for a sitemap is XML, which lists the data in a format both browsers and other software can interpret. It is also common to provide an HTML version and possibly even a visual representation for human users who actually want to browse the sitemap. Many times it is useful to users if they have trouble finding something on a site or are not even sure what they want to find.
There are many sitemap generators on the market that automate their creation. Some content management systems also have user-created extensions or plugins for sitemap generators. Furthermore, there are some free sitemap generators on the web, such as XML-Sitemaps.com. These typically also include submission instructions so that you can make your sitemap available through Google.