Rules / image rules

image.alt.content.null

Default

error

Plugin

image

The alt text does not include the word null.

Why: null in alt text is almost always a template bug, such as an empty value.

When off: alt text with null passes.

<!-- ✗ Fails -->
<img src="/bread.jpg" alt="null" />

<!-- ✓ Passes -->
<img src="/bread.jpg" alt="Bread" />

References

• Google: Image SEO best practices: Alt text should describe the image, so a template value such as "null" is a bug.