Alternative text (alt text) is meant for readers who cannot see an image, such as blind readers and readers who use a text or mobile browser. It should summarize an image's purpose, and should not duplicate its caption. Every image should have alt text, except for purely decorative images, which should instead have "|alt=|link=".
Mario Kart DS
The following table shows images and captions on the left, and alt text and captions on the right: the right column is what a visually impaired reader will hear. This table was computed from the copy of Mario Kart DS cached on 25 May 2013 at 00:55.
| Image and thumbnail | Text description |
|---|---|
 | Video game box art. A video game character, Mario, leaps over a racing kart.
|
| A video game screenshot with a racing kart on the top screen and a map of the race course on the bottom screen.
Mario racing on Figure-8 Circuit. Item boxes are in front of him, and the bottom screen shows a bird's-eye view of the immediate vicinity.
|
 | Book icon
|
 | Wikipedia book
|
 | Portal
|
 | This is a good article. Click here for more information.
|
