How to configure the display of the transmitted link so that the picture is not cut off?

Question

open graph

Hello, dear connoisseurs.
The question may be hackneyed, but nevertheless I can not defeat it.
I'm trying to send a link to VKontakte, open graph fulfills the norms (in the header display), but it cuts the pictures.
How I do it:
In the header, between the head tags, I write the code for VK:

<meta property="og:title" content="Заголовок" />
<meta property="vk:image"  content="https://www.mysite/www/.../.../.../images/картинка_для_open_graph.jpg"  />

Whichever picture I choose, the result is the same: The picture is cut.
How to fix?
Thank you.