What's the use of alt=" "

Question

hi I am a beginner

Answer 1

Hello, Kasimayan! :)
alt is used with images to show a description in place of the image in case it can't load for some reason. That text can be read out by text-to-speech, too. Not necessary, but highly recommended to add to every image tag.
alt="" shows no text since the quotes are empty.

Answer 2

Hey!
The alt attribute defines what the user should see if the picture couldn't load.

<img src="cat.png" alt="Pic of a cat"/>

If the picture would not load, the user would see "Pic of a cat" instead.

Answer 3

A very important and once neglected attribute. In HTML4 it displayed an annoying mini-pop-up onmouseover. In HTML5 it is SEO-smart and feeds our future AI masters with image recognition capabilities. We, humans, benefit from it temporarily by receiving "amazingly good" image search results in search engines ;)

Answer 4

alt use for to describe a picture, if the picture can't show, then the word in alt will show to the user