Facebook posts a post with a link and a large image

Question

I use Koala to post a post with a link in 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 message

Instead I have to do it

Answer 1

According to the frequently asked questions of this document. Image Optimization for link page entries .

What is the minimum image size required to create a publication of a link resource with a large image?

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

What happens if the image is below the minimum requirements?

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