If you want to enhance the way that a form looks, consider adding images to the form. You use image objects to contain images such as logos, icons, graphics, and photographs. An image object provides a graphic element that users cannot edit. Image objects support these file formats:
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Joint Photographic Experts Group variations (JPG)
LiveCycle Designer ES supports JPG images that include digital camera Exchangeable Image File (EXIF) data.
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Graphics Interchange Format (GIF)
Although LiveCycle Designer ES supports GIF images, animated GIF files are not supported. LiveCycle Designer ES also supports transparency within GIF files to allow for overlaying images on forms.
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Portable Network Graphics (PNG)
LiveCycle Designer ES supports transparency within PNG files to allow for overlaying images on forms.
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Tagged Image File (TIF)
LiveCycle Designer ES supports Monochrome (1 color component 1-bit depth), Greyscale (1 color component 8-bit depth), RGB (3 color components 8-bit depth), and Palette (1 color component 1,2,4,8-bit depths) TIF images.
The image to insert can be specified by either a file name or a Uniform Resource Locator (URL). By default, the image is linked, which means that it is stored separately from the form and displayed whenever the form is opened. You can also embed the image in the form.
Caution:
Linking to an image is not a secure way to protect sensitive business data. If the image is considered sensitive, you should embed it in the form. Also, you can use a secure HTTPS connection in conjunction with a URL. However, HTTPS protects the transmission of the image data only while the data is being transmitted; it does not protect access to the image (that is, no authentication is performed).
See also 

Overview of images