Entering alt text for an image
In step 4 of creating your newsletter, you can add alt text to your image. Click on an image in your newsletter. On the left side of the screen, enter your text in the ‘Enter alt-text’ field. This field is in the same place in the ‘Image’ and ‘Text with image’ blocks.

Why you should enter alt text
Alt text is a short description that appears in place of an image while it is not loaded. A text of just a few words helps you in five ways. The first two are the most important, as they ensure your message is also clear to readers who cannot see the image.