De-indexing is when for whatever reason, a website, webpage, or content of some kind is removed from Google’s Index and will not show in search at all, for any keyphrase, or even, sometimes, for the name of the site. It is the harshest form of censure Google applies.nnDe-indexing is a manual action, so a message is sent via Google Webmaster Tools to inform the site owner of the action. This can be a very sudden thing and a site’s traffic can – and is likely to – drop rapidly. It is not the end of the world though – even if it feels like it at the time. A de-indexed site can be restored to the SERPs once the reasons for action have been addressed. These sites can even regain their previous rankings or better with a disciplined, white hat SEO strategy in place.