Prevent most search engine web crawlers from indexing a page on your site.
You will get more info about this meta tag on https://support.google.com/webmasters/answer/93710?hl=en
Deploy, install and enable the module on your web project. Then, when editing a page, you will find a new property on the "Options" tab, to block search indexing with 'noindex'.
This will add the following meta tag on the <HEAD> part of the HTML code of your page on preview and live mode:
<meta name="robots" content="noindex">
You will need to publish your page to enable this tag on live mode.
Here is an example: