Let’s make this year the Year of Alt Text! Our goal is to create widespread awareness about the need to label images so that users who use screen readers can obtain appropriate information from any kind of document.
Enter descriptions that are appropriate, succinct, and are mindful of the context. Think from the user’s perspective… if you were using a screen reader, what information do you think you would need to understand the purpose or value of the image in that context? No need to include a description if the image is decorative. Depending on the application you may be using, the process may differ.