title: Opera default page - website links with logo
body: <p>The default page on Opera Blink contains links to user-favourited webpages. Some of these webpages, like facebook, twitter, etc., have a logo.</p>
  
  <p>When I add my website there, it doesn't show any logo; it shows only my-site.com text.</p>
  
  <p><img src="https://i.stack.imgur.com/HNzig.png" alt="enter image description here"></p>
  
  <p>I see there are some websites which, when I add them here, display their logo.</p>
  
  <p>What should I do with my website to make the logo retrievable by Opera?</p>