What does this mean?

When an image is the only content of a link, it should specify alternative text, via an alt attribute. The alternative text should describe the purpose of the link.

Without this, some users will be unable to determine what a link does, for example anyone using a screen reader.

To fix this, simply add an alt attribute to the image inside the link, e.g.:

<a href="/apple">
    <img src="apple.png" alt="Apple">

47.5% done

How close this website is to fixing this issue.

Media Alternative text Found on page Issues
Encoded image
No text 81
81 distinct issues were found in the sample of 125 web pages.
More results from Verbund