How to successfully implement og:image for the LinkedIn

Question

THE PROBLEM:

• I am trying, without much success, to implement open graph image on site: http://www.guarenty-group.com/cz/
• The homepage

Answer 1

In my case I did exactly this and it worked fine (on my page of course).

Put these four lines in the head:

BUT, pay attention that if you have more than one head in your page, these lines need to be inserted in the first head otherwise it will not work.

I also had prefix="og: http://ogp.me/ns#” in the html