How do I enable alt-text in Poll Everywhere?
Presenters can enable Alt Text for images in polling activities. In the activity editor, add customized descriptions to images you upload. These descriptions will appear as alt-text for participants using screenreaders. You can add descriptions when you create or edit Multiple choice, Ranking, or Clickable image activities.
Enable alt-text
Login to Poll Everywhere.
Select your Profile.
Select Features Lab.
Toggle "on" Image alt-text.
https://www.polleverywhere.com/labs
Features Lab