Definitions for "Alt text"
Keywords:  img, mouse, hovers, cursor, text
Alt text is generally a phrase or short sentence that forms the content of the alt attribute. It is contained within the quotation marks. This simple idea has great power. The wrong or inadequate alt text can make your web site inaccessible to people with disabilities.
HTML attribute that provides alternative text for images. Search Engine spiders or robots can read ALT text but not the images.
Alternative text, sometimes called alt text, is a method of providing equivalent text for non-text elements, such as images, objects, and applets. W3C® has recommended that alt text be no longer than 150 characters.