All Images need to have Alternative text (ALT tag) included. To add a ALT tag to your image in the rich text editor, you will
For infographics or other information-dense images, add the full text of the graphic elsewhere on the page. There is also an HTML longdesc tag if you are up to editing the source code:
<img src="w3html.gif" alt="W3Schools.com" width="100" height="132"