What is the use of alternative text in image mapping?

Answer 1

1. If images fails to load – If for any reason an image does not render on a web page, the alt tag will display in place. This means visitors to that web page understand what image should be there even though they are unable to see it.
2. For Search Engines – Search engines, such as Google and Bing regularly crawl web pages. It is easy for them to understand text copy on a page, however, images are difficult to read. This is where alt text comes to play. Alt text is used to describe to search engines what the image is showing, allowing search engines to give users better results when performing an image search.
3. For the visually impaired – The visually impaired tend to use screen readers in order to browse web pages. These screen readers will identify and interpret what is being displayed on their screen. Alt text is needed to explain and describe to people using screen readers what is on your page.

Answer 2

It increases seo ofvyour website