A simple library that provides standard Unicode emoji support across all platforms.
The Tweet Button is a small widget which allows visitors to share content and connect on Twitter.
Open graph description entity tag
Open graph title entity tag
A scheme.org entity that represents an article, such as a news article or piece of investigative report. Newspapers and magazines have articles of many different types and this is intended to cover them all.
Sites who has this tag are verfied by google to use WebMaster tools