Facebook’s guide to sharing details some meta tags to make that sharing work better:
In order to make sure that the preview is always correctly populated, you should add the tags shown below to your html. An example news story could have the following:
<meta name="title" content="Smith hails 'unique' Wable legacy" /> <meta name="description" content="John Smith claims beautiful football is the main legacy of Akhil Wable's decade at the club. " /> <link rel="image_src" href="http://www.onjd.com/design05/images/PH2/WableAFC205.jpg" />
As shown, title contains the preview title, description contains the preview summary and image_src contains the preview image. Please make sure that none of the content fields contain any html markup because it will be stripped out. For consistency’s sake, please use the
tag to provide text data for the preview, and the
tag for any source urls.
The title and summary tags are the minimum requirements for any preview, so make sure to include these two.