The alt attribute is one of the image element attributes used to convey specific information about the image when the element cannot be rendered.
Using Alt text in images improves accessibility for users who can't able to see the images. Alternative text is beneficial in many situations, such as people using screen readers, speech input softwares, browsing speech-enabled websites, Mobile web users and Search engine optimization.
Alt text content must be useful and meaningful information of the images. Adding alt text with proper keywords helps google to understand the image details as well as the context of the web page. Properly optimized alt tag images may get good results in google image search.
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