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phpfacebookfacebook-graph-apikoala

Facebook publish post with link and big image

I use Koala to publish a post with link to a Facebook Group

@graph = Koala::Facebook::API.new(access_token)

@graph.put_connections(group_id, "feed", {
              :message   => post_message,
              :picture   => backdrop,
              :link      => url
            })

I get this post

enter image description here

Instead I have to do this

enter image description here

Solution

  • According to the FAQ of this document Image Optimization for Link Page Posts.

    What is the minimum image size required to generate a link share post with a large image?

    600 x 315px is the minimum size that we require. However, we recommend that you use images that are at least 1200 x 630px for the best display on retina and high-resolution screens.

    What will happen if the image is below the minimum requirements?

    If the image is smaller than 600 x 315px, we will render it at 154 x 154px or smaller on mobile or desktop.

    enter image description here