`og.image`

Default: warn
Plugin: og

A page has an og:image.

Why: Link previews with an image get more attention than plain links.

When off: pages without og:image pass.

<!-- ✗ Fails -->
<head>
  <title>About us</title>
</head>

<!-- ✓ Passes -->
<head>
  <meta property="og:image" content="https://example.com/og/about.png" />
</head>

References

The Open Graph protocol: og:image is a required property. It only affects link previews, so the rule warns.