Checkpoints - Image "alt" text should contain more than one word
The text alternative serves the same purpose and presents the same information as the original non-text content. As a result, it is possible to remove the non-text content and replace it with the text alternative and no functionality or information would be lost. Alt text is always required, how it is written can vary depending on the type of image. Most screen reader software announces the presence of an image by appending a word such as “graphic” to the alt text, so using words such as “photo” “graphic” and “image” should be avoided in the alt text, unless it helps convey further meaning important for a user to know.
Accessibility (WCAG 2 Level A, 1.1.1), SEO
The checkpoint examines the entire HTML source code of a page and reports any <img> elements where the alt attribute consists only of one word.