What is the use of alt

Answer 1

Alternative text shown if <img> not loading.....

Answer 2

It is also important for blind people as the content of "alt" can be spoken

Answer 3

alt creates text that is displayed when an image fails to load in the DOM. This alt text is also used by screen readers for the visually impaired and for SEO as bots from Google and other engines use this to describe the image you should have seen.

Answer 4

Can show alt used with description in answer for context please?