Alt Text

Descriptive text added to an image's HTML tag that screen readers read aloud and search engines use to understand image content. Every meaningful image should have alt text; decorative images should have an empty alt attribute.

Why it matters: Alt Text is one of the accessibility signals that shapes how search engines, AI tools, and real visitors experience your website. Getting it right removes friction, protects your rankings, and makes every other optimization work harder. Auditing it regularly is the fastest way to catch regressions before they cost you traffic or conversions.