Rules / viewport rules

viewport.content.empty

Default

error

Plugin

viewport

The viewport content is not empty.

Why: An empty viewport is the same as no viewport.

When off: empty viewports pass.

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

<!-- ✓ Passes -->
<meta name="viewport" content="width=device-width, initial-scale=1" />

References

• MDN: The viewport meta element: An empty viewport tag has no effect.