2.3.1.4 alt

altof type DOMString

Alternate text for user agents not rendering the normal content of this element.

Note This attribute is standard on img, area, applet, and input tags.

The alt text is displayed in the object only if the object fails to load and there is no fallback markup. The alt text is not displayed as a tooltip when the mouse pointer hovers over the object.

The alt attribute extends the HTMLObjectElement interface.