How to verify your site for Google’s Webmaster Tools
Before you can access information about your site using Google’s Webmaster Tools (WMT), you must successfully complete Google’s site verification process. This is a process that Google has put in place to allow you to verify that you are, indeed, the webmaster or owner of the web site whose information you are attempting to access.
If you don’t already have one, you will need to create a Google Webmaster Tools account. Next you will need to log into your WMT account. On the WMT home page click on the ADD SITE button, and enter the URL of the site that you would like to verify and manage.
Then press the CONTINUE button.
You will next be taken to Verify Ownership screen that allows you to select a verification method. Be sure that the Site URL is correct. The verification status should display as NOT VERIFIED. The user interface will ask you to select how you would like to verify your site.
There are three methods available for site verification. They are:
Meta tag verification method
HTML File verification method
DNS TXT record verification method
All methods are acceptable and none of the methods provide any additional benefits over the other. Since a single Google WMT account can be used to manage multiple web sites, it should be noted that not ALL of those sites have to be verified the same way. Some can be verified with the meta verification method, others with the file verification method, and still others with the DNS TXT record method.