When you link to a site in a contact, the wrong image appears, how to fix it?

Question

PHP

I insert the link of my site (a certain page) in the contact and the image that appears with the link is not at all what it really is. I read that the situation can be corrected using vk api. How to do it right?

Answer 1

https://habrahabr.ru/company/softline/blog/144946/

Answer 2

what does the api have to do with it, study the markup