When Google indexes the site map of your site (which is a list of pages on your site), you give Google more information about your site including pages that may not be discovered by Google's crawling process.
There are actually two types of site maps: HTML and XML site maps. Google does not understand the HTML variant, so these you should not use if you want to improve Google's indexing of your site. The following steps guide you through the process:
Step 1:Install an XML site map: Our preferred XML site map for Joomla is XMAP - you can find it in the Joomla Extensions Directory.
Step 2:Register with "Google Webtools": After you have installed the component, the next step is to make sure you register your site map with "Google Webtools."
Step 3: Register your website: After you have registered with Google (you need a Google Account), you can register your website and its site map.
Step 4:Verify your website: In order for Google to know that you are the owner of the site, you need to insert a verification code in your website.To make things easier for your, there are Joomla plugins that allow you to enter the code so Google can verify your site.
We use "Google Verify", a Joomla Plugin to make Google Webmaster Tools site verification a bit easier. Once you have installed the plugin, you can enter the verification code from Google and activate the plugin. On the Google Webtools site, you can verify your website. Google now knows your are the owner of the site.
It normally takes a few hours before your site map is indexed.
Step 5:Register your site map: To register the site map in "Google Webtools.", you need to give Google the link to the site map. To find the link, go to the XMap component and look for options. In the options, you will find the link you need. Copy the link and insert it in "Google Webtools."
To find the link, go to the XMap Component and Click on Options.
Click on Preferences and copy the link to the XML site map
Insert the link into the sitemaps option of Google Webtools.
If you use SEF urls for your site, do not paste the link to the site map you see in your browser - it will not work: only use the link to the XML site map you find in the options of XMap, otherwise you will get the following error: "Unsupported File Format - Your sitemap appears to not be in the Supported File Format."