Alt Text
This text is used to describe an image and will not usually be seen by an average site user. The purpose of ALT text is to provide an alternative way of conveying the information provided by an image to website user’s that can’t necessarily see the image. Users can use different browser versions to enhance the accessibility of a website.
In SEO terms it’s generally good practise to optimise images and label them as accurately as possible in order to help search algorithms identify and index your website’s content correctly.