what is the use of alt

Answer 1

The required alt attribute specifies an alternate text for an image, if the image cannot be displayed.

The alt attribute provides alternative information for an image if a user for some reason cannot view it (because of slow connection, an error in the src attribute, or if the user uses a screen reader).

Answer 2

the line we write inside "" after alt , is displayed if the image does not exist due to any reason.

Answer 3

you can see the lesson