Created
April 8, 2013 03:56
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Here’s the code to replace images in PDFs, in Java and C#. It will replace the first image in the first page.
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| PdfReader pdf = new PdfReader("in.pdf"); | |
| PdfStamper stp = new PdfStamper(pdf, new FileOutputStream("c:\\out.pdf")); | |
| PdfWriter writer = stp.getWriter(); | |
| Image img = Image.getInstance("image.png"); | |
| PdfDictionary pg = pdf.getPageN(1); | |
| PdfDictionary res = | |
| (PdfDictionary)PdfReader.getPdfObject(pg.get(PdfName.RESOURCES)); | |
| PdfDictionary xobj = | |
| (PdfDictionary)PdfReader.getPdfObject(res.get(PdfName.XOBJECT)); | |
| if (xobj != null) { | |
| for (Iterator it = xobj.getKeys().iterator(); it.hasNext(); ) { | |
| PdfObject obj = xobj.get((PdfName)it.next()); | |
| if (obj.isIndirect()) { | |
| PdfDictionary tg = (PdfDictionary)PdfReader.getPdfObject(obj); | |
| PdfName type = | |
| (PdfName)PdfReader.getPdfObject(tg.get(PdfName.SUBTYPE)); | |
| if (PdfName.IMAGE.equals(type)) { | |
| PdfReader.killIndirect(obj); | |
| Image maskImage = img.getImageMask(); | |
| if (maskImage != null) | |
| writer.addDirectImageSimple(maskImage); | |
| writer.addDirectImageSimple(img, (PRIndirectReference)obj); | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| stp.close(); |
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| PdfReader pdf = new PdfReader("in.pdf"); | |
| PdfStamper stp = new PdfStamper(pdf, new FileStream("out.pdf",FileMode.Create)); | |
| PdfWriter writer = stp.Writer; | |
| Image img = Image.GetInstance("image.png"); | |
| PdfDictionary pg = pdf.GetPageN(1); | |
| PdfDictionary res = | |
| (PdfDictionary)PdfReader.GetPdfObject(pg.Get(PdfName.RESOURCES)); | |
| PdfDictionary xobj = | |
| (PdfDictionary)PdfReader.GetPdfObject(res.Get(PdfName.XOBJECT)); | |
| if (xobj != null) { | |
| foreach (PdfName name in xobj.Keys) { | |
| PdfObject obj = xobj.Get(name); | |
| if (obj.IsIndirect()) { | |
| PdfDictionary tg = (PdfDictionary)PdfReader.GetPdfObject(obj); | |
| PdfName type = | |
| (PdfName)PdfReader.GetPdfObject(tg.Get(PdfName.SUBTYPE)); | |
| if (PdfName.IMAGE.Equals(type)) { | |
| PdfReader.KillIndirect(obj); | |
| Image maskImage = img.ImageMask; | |
| if (maskImage != null) | |
| writer.AddDirectImageSimple(maskImage); | |
| writer.AddDirectImageSimple(img, PRIndirectReference)obj); | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| stp.Close(); |
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Replace multiple different images on one PDF template page with itext (itextsharp),http://stackoverflow.com/questions/4302056/replace-multiple-different-images-on-one-pdf-template-page-with-itext-itextshar