Rules / description rules

description.content.undefined

Default
error
Plugin
description

The description does not include the word undefined.

Why: undefined in a description is almost always a template bug, such as a missing variable.

When off: descriptions with undefined pass.

<!-- ✗ Fails -->
<meta name="description" content="undefined" />

<!-- ✓ Passes -->
<meta name="description" content="Fresh bread every morning." />

References