In Microsoft Office, you can mark an image or shape as decorative by selecting the “Mark as decorative” checkbox in the Alt Text pane. If you export your document as a PDF, any visuals you have marked as decorative will be automatically tagged as artifacts, which means they will be ignored by screen readers.getting over it

However, if the image or shape already has alternative text added to it, you should not mark it as decorative. Instead, you should provide a meaningful description of the image or shape in the Alt Text pane.