Apps that link to your content can then use this metadata to deep-link into your app, take users to an app store to download the app, or take them directly to the web to view the content.
Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.
Chrome for Android, since version 39 supports the "theme-color" meta tag to allow websites control the background color of the tab's UI header.
This page contains a meta robots tag which tells search engines and robots to index or not index the page.
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook