A background appears behind text or images on the page. The background can be as simple as a solid color, or you can use an image. You can selectively apply a background to only specific pages or page ranges in one or more PDFs. A PDF supports only one background per page, but the backgrounds can vary from page to page.
To reuse a background and background options that you saved in an earlier session, select it from the Saved Settings menu.
To apply a solid color background, select From Color. Then select a color swatch or custom color from the color picker .
To use an image, select File, then select the image file. To select a specific image in a multipage file, enter it in Page Number.
Only PDF, JPEG, and BMP files can be used as background images.
If the original image file that you are using as a background changes, you can update the PDF to show the new version of the image rather than removing the old version and re-adding the new one.
This process applies only to backgrounds added in Acrobat 7.0 or later.
Open a single PDF, or select one or more component PDFs in a PDF Portfolio. Then choose Tools > Pages > Background > Remove.
To remove a background from multiple PDFs, close any open PDFs and choose Tools > Pages > Background > Remove. In the dialog box, click Add Files, choose Add Files or Add Open Files, and then select the files. Click OK, and then in the Output Options dialog box, specify your folder and filename preferences.