Alt text or alternative text are embedded in HTML codes and are related to images. They help in conveying information about the images. Sometimes, pictures are not viewable to the browsers; alt text ensures that the users can at least access the required information. Alt text is helpful for visually impaired readers to gain an understanding of online images; and constitutes an integral part of web accessibility. Alt text is exhibited in place of images if they are unable to be loaded. These attributes also facilitate the indexing of the images by the search engine bots.
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