Hi Jacob,
Thank you for using Syncfusion Products.
We can able to set the image as background, please use the
below code snippet:
PdfLoadedDocument
ldDoc = new PdfLoadedDocument("Input.pdf");
PdfDocument
doc = new PdfDocument();
for
(int i = 0, count = ldDoc.Pages.Count; i <
count; ++i)
{
PdfPageBase
page = doc.Pages.Add();
PdfGraphics
g = page.Graphics;
PdfPageBase
lpage = ldDoc.Pages[i];
PdfTemplate
template = lpage.CreateTemplate();
PdfImage
img = new PdfBitmap("Image.gif");
g.DrawImage(img, new PointF());
g.DrawPdfTemplate(template, PointF.Empty, page.Size);
}
doc.Save("Output.pdf");
Please let us know if you need any further assistance.
Thanks,
Karthikeyan.C