`og.description`

Default: warn
Plugin: og

A page has an og:description.

Why: Link previews show the og:description below the title.

When off: pages without og:description pass.

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

<!-- ✓ Passes -->
<head>
  <meta property="og:description" content="Who we are, and how we bake." />
</head>

References

The Open Graph protocol: og:description describes the page in link previews. The rule warns.