Alt attribute

A search engine can only read the text elements of a web page. So that search engines like Google, Yahoo or Bing can also process the images on a web page, these are provided with so-called alt attributes. Keywords (search terms) are also embedded in the alt attribute of an image that thematically fit with the page and should improve the ranking of the web page on Google, etc. In addition, the alt attribute offers the advantage that people with visual impairments can also understand images, as software can detect and read the brief descriptions.