some optional structured properties: og:image:url - Identical to og:image . og:image:secure_url - An alternate url to use if the webpage requires HTTPS. og:image:type - A MIME type for this image. og:image:width - The number of pixels wide. og:image:height - The number of pixels high. A full image example: <meta property="og:image" content="http://example.com/ogp.jpg" />