Meta tags for URL with description and image (In Skype, Discord)

Question

When somone send link in Skype or Discord, it can create image and description, like is shown on screenshots:

Answer 1

<meta property="og:title" content="Site Title" />
<meta property="og:type" content="website" />
<meta property="og:url" content="http://my.site.com" />
<meta property="og:image" content="http://my.site.com/images/thumb.png" />
<meta property="og:description" content="Site description" />
<meta name="theme-color" content="#FF0000">

<!-- Include this to make the og:image larger -->
<meta name="twitter:card" content="summary_large_image">

And the image displayed as the link preview on Skype is the thumb image specified in og:image (that is not available anywhere else on the page).

Keep in mind that Skype may also cache information.