How to add an image as a full-page background in Word 2010

Try creating a Text Box, you can set the background using Shape Fill, then you can set the size of the text box to 100% height and width relative to page.

This Microsoft Answers post should solve your problem. There are two methods, both of which I will include.

Method 1:

Apparently the tiling is the result of a disagreement between Word and some (most?) printer drivers. Some people claim that printed backgrounds don't tile for them, but this has never worked for me with any printer (Epson, Canon, or HP) or any version of Word back to 97.

The workaround is similar to using a watermark, but -- at least in your case -- you should avoid the Watermark dialog because it's too limiting. You should understand that a watermark is nothing more or less than a picture or WordArt that is inserted into a header, given a text wrapping of Behind Text, and given low contrast and high brightness to let the overprinting text be readable. The Watermark dialog, especially in Word 2007 and 2010, goes (unnecessarily) further, though -- it removes any existing watermark when you insert a new one, and it doesn't know how to insert a watermark only in a single section.

For the workaround:

• Open the header pane.
• Click Insert > Picture and select your logo's file.
• On the Picture Tools tab, change the Text Wrapping to Behind Text.
• Drag the logo to the size and location you want.
• Use the contrast and brightness controls (and other tools if necessary) on the Picture Tools tab to adjust the logo's appearance.
• If you're using a layout of Different First Page or Different Odd and Even, copy the adjusted logo and paste it into the headers of the other page types. To make those panes available, you may need to get out of the header pane, insert some temporary hard page breaks, and then open the applicable headers.

Method 2:

The only solution I've found is to not use the Page Color/background option and to instead insert the image in the Header/Footer. I suspect the reason this occurs is because the intention of the Page Color function is for web pages (which tile an image) rather than printed documents.

To insert your image in the header/footer:

1. Right-click the header/footer area and then click "Edit Header/Footer"
2. Insert your picture (Insert tab/Image)
3. Size it to fit your page (or however large you want)
4. If there is other content in the header/footer, select the picture and on the Picture Tools Format tab, click Wrap Text and then click Behind Text

Here's what worked for me.

1. Insert the picture as Wrap, not Inline (details here)
2. Right-click the picture to see the LAYOUT options.
3. POSITION tab: Absolute Position 0 to right of Page, Vertical Position 0 below Page. And here's the real key (I think): uncheck the "insert in table" box!
4. SIZE tab: Height and Width, both set to Absolute and the actual page height and width.

You can set it whilst in compatibility mode. Save the doc under V11 compatibility first (i.e. as a .doc 2003 format), then save it back to docx if you need to. Although the option to set relative page size will remain greyed out, you can still adjust the percentage.