What is a Noindex Meta Tag?
Noindex is a meta tag that instructs search engines not to include a specific page in their search results.
The noindex tag can be placed in the section of the page’s HTML or in an HTML header returned by the web server.
If a page has been indexed by Google and then a noindex tag was added, the page will be removed from Google search results after Google crawls the page again.
<meta name='robots' content='noindex, follow' />