Facebook Open Graph

You need to setup the correct image in order for the sharing to Facebook work correctly

Here are some notes from Facebook

Image Sizes

• Use images that are at least 1200 x 630 pixels for the best display on high resolution devices. At the minimum, you should use images that are 600 x 315 pixels to display link page posts with larger images.

Small Images

• If your image is smaller than 600 x 315 px, it will still display in the link page post, but the size will be much smaller.

Favicon.ico need to be replaced

apple-touch-icon.png is a preview icon when user set a bookmark on their homescreen