To add backgrounds and watermarks to uploaded images, set the path in the background/watermark attribute of the image element in Web.Backload.config Background images are only used in resize modes with canvas (fit, place) Note: Background and watermark images are a Pro/Enterprise features, while background color is a Standard feature Example: <backload xsi:noNamespaceSchemaLocation="Config\Web.Backload.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:name="urn:backload-schema"> <!-- Sets a resize mode, background, watermark and vertical watermark position --> <images resizeMode="fit" background="~/Backload/Imaging/background.png" watermark="~/Backload/Imaging/watermark.png" watermarkPosition="bottom" /> </backload>