How to Use Backgrounds in MS Word That Fit the Page Size

1. Open Microsoft Word. The program automatically defaults to an 8.5-by-11-inch page. To change the page size, click the 'Page Layout' tab, click the 'Size' button directly below the tab and select a new page size.
2. Click the 'Page Layout' tab if it is not already enabled. Click the 'Page Color' button on the ribbon/toolbar below the tab and select 'Fill Effects.'
3. Click the 'Picture' tab. Click the 'Select Picture' button. Browse to the picture to use for the background and double-click the image, which appears in the preview window.
4. Click the 'OK' button and Word inserts the background to automatically fill the page size in use.