A picture, described
Images make pages come alive — but not everyone can see them. Every image needs alt text: a short description read aloud by screen readers and shown if the image fails to load.
img and figure
- src — where the image file is. alt — what it shows, in a few words.
- Decorative images get an empty alt (alt="") so screen readers skip them.
- Always set width and height: the browser reserves the space before the image loads, so the page doesn't jump around (that jumping is called layout shift).