Alt text is for screen readers and SEO

Alt text describes the image to users with screen readers and to search engine crawlers. Good alt text is specific (5-15 words), descriptive, and avoids filler phrases like “image of” because screen readers already announce the element as an image.

Frequently Asked Questions

Should every image have alt text?
Decorative images (purely visual flourishes) can use alt="" so screen readers skip them. All meaningful images need descriptive alt text.