The Sitemaps protocol allows a webmaster to inform search engines about URLs on a website that are available for crawling. A Sitemap is an XML file that lists the URLs for a site. It allows webmasters to include additional information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. This allows search engines to crawl the site more intelligently. Sitemaps are a URL inclusion protocol and complement robots.txt, a URL exclusion protocol.
Sitemaps are particularly beneficial on websites where:
- some areas of the website are not available through the browsable interface, or
- webmasters use rich Ajax, Silverlight, or Flash content that is not normally processed by search engines.
Sitemaps supplement and do not replace the existing crawl-based mechanisms that search engines already use to discover URLs. Using this protocol does not guarantee that web pages will be included in search indexes, nor does it influence the way that pages are ranked in search results.
Google Webmasters Tools
Sitemaps are a way to tell Google about pages on your site we might not otherwise discover. In its simplest terms, a XML Sitemap—usually called Sitemap, with a capital S—is a list of the pages on your website. Creating and submitting a Sitemap helps make sure that Google knows about all the pages on your site, including URLs that may not be discoverable by Google’s normal crawling process.
In addition, you can also use Sitemaps to provide Google with metadata about specific types of content on your site, including video, images, mobile, and News. For example, a video Sitemap entry can specify the running time, category, and family-friendly status of a video; an image Sitemap entry can provide information about an image’s subject matter, type, and license. You can also use a Sitemap to provide additional information about your site, such as the date it was last updated, and how often you expect the page to change. We recommend that you use a separate Sitemap to submit News information.
Sitemaps are particularly helpful if:
- Your site has dynamic content.
- Your site has pages that aren’t easily discovered by Googlebot during the crawl process—for example, pages featuring rich AJAX or images.
- Your site is new and has few links to it. (Googlebot crawls the web by following links from one page to another, so if your site isn’t well linked, it may be hard for us to discover it.)
- Your site has a large archive of content pages that are not well linked to each other, or are not linked at all.
How to add a Google XML sitemap
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