What image sizes are needed for the new Vkontakte design?

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Good to all) There were a few questions here)
1. What sizes of pictures are needed for the new design of Vkontakte? For articles, so that it looks normal in reposts, for avatars.
2. And in general, is there any fresh information about other social networks in order to read and correctly add pictures by size?
3. Still interested in the sizes for Open Graph.
Smo-shniki, share usefulness))) Thank you)

Answer 1

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vk wiki
Well, open and see the dimensions of F12 yourself !