Add Watermark In Excel. Click the Insert Picture button and then find the watermark image that you want to insert. On the Insert tab in the Text group click Header Footer.
Just because Excel doesnt have an official way to add a watermark it doesnt mean you cant add one. Under Header click on the Custom Header button. Copy the Word Art by pressing the key CTRLC and paste into Paint and save the picture.
Click the Design tab and in the Header Footer elements group click Picture.
Tap on the header and on the Header Footer tab on the ribbon click Picture. Insert Watermark in Excel. Excel changes to Page Layout View. The Design tab appears under Header Footer Tools.