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.
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Choose Tools > Edit PDF.
The Edit PDF toolset is displayed in the secondary toolbar and other related options are displayed in the right hand pane.
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If a message appears, telling you that the current document already has a background, click Replace Background. If you apply the new background to a limited range of pages, the old background remains unchanged on pages outside that range.
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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.
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Only PDF, JPEG, and BMP files can be used as background images.
If the original image file that you are using as a background change, you can update the PDF to show the new version of the image rather than removing the old version and readding the new one.
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This process applies only to backgrounds added in Acrobat 7.0 or later.
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