Insert the picture – Click on the picture icon at the top or right-click and select Insert Image.
Image Description is required for all images.
Accurate, Concise Description
It’s important to not only provide an ALT tag, but also provide one that is useful in the context of the document. You may not need to include every artistic detail, and you may be able to skip over purely decorative images, but those that contain critical information need to have it to spelled out in the ALT text.