Merge pull request thedaviddias#109 from FlightOfGrey/master

Adding Facebook image sharing height and width.

README.md

@@ -199,6 +199,8 @@ Minimum required xml markup for the browserconfig.xml file is as follows:
 
 * [ ] **Facebook Open Graph:** ![Low][low_img] All Facebook Open Graph (OG) are tested and no one is missing or with a false information. Images need to be at least 600 x 315 pixels, 1200 x 630 pixels recommended.
 
+> **Notes:** Using use og:image:width and og:image:height will specify the image dimensions to the crawler so that it can render the image immediately without having to asynchronously download and process it.
+
 ```html
 <meta property="og:type" content="website">
 <meta property="og:url" content="https://example.com/page.html">
@@ -207,9 +209,13 @@ Minimum required xml markup for the browserconfig.xml file is as follows:
 <meta property="og:description" content="Description Here">
 <meta property="og:site_name" content="Site Name">
 <meta property="og:locale" content="en_US">
+<!-- Next tags are optional but recommended -->
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
 ```
 
 > * 📖 [A Guide to Sharing for Webmasters](https://developers.facebook.com/docs/sharing/webmasters/)
+> * 📖 [Best Practices - Sharing](https://developers.facebook.com/docs/sharing/best-practices/)
 > * 🛠 Test your page with the [Facebook OG testing](https://developers.facebook.com/tools/debug/)
 
 * [ ] **Twitter Card:** ![Low][low_img]