When using the img element, specify a short text alternative with the alt attribute or use an empty alt in case of a decorative image. The alt text must convey the same meaning as the image.
Engine scans for alt attributes with less than 3 characters
Users who use assistive tools, such as screen readers will fail to understand properly the content of the image
<img src="/example_"newsletter.gif" alt="example_Free newsletter.
Get free recipes, news, and more. Learn more." />