Tags: accessibility, images
Aliases: no-alt-text
This rule is triggered when an image is missing alternate text (alt text) information.
Alternate text is commonly specified inline as:
Or with reference syntax as:
![Alternate text][ref]
...
[ref]: image.jpg "Optional title"Guidance for writing alternate text is available from the W3C, Wikipedia, and other locations.
Rationale: Alternate text is important for accessibility and describes the content of an image for people who may not be able to see it.