This article explains how to add, remove, or change text and picture watermarks in Word for Microsoft 365, Word 2019, Word 2016, Word 2013, and Word 2010.
How to Add or Remove Watermarks from Word Documents
Word includes several standard text watermarks. Follow these steps to use one of the built-in formats or to create your own watermark.
In Word, open the document to which you want to add a watermark.
Go to the View tab and select Print Layout.