Observation Details
Images that are not purely decorative, must have a purpose equivalent text alternative set, to be accessible if the image cannot be visually perceived. A prime example is a blind screen reader user. But also if an image cannot be loaded due to network issues, the text alternative ensures perception of the conveyed information.
Images with non-equivalent text alternative in SEO content:
"Sternstunde der Fotografie"
"Smart, schnell und intuitiv"
"Leistung, die überzeugt"
Remediation Notes
Ensure purpose equivalent text alternatives are present for every non-decorative image.