Develop Reference

Converting multiple TIFF Images to PDF using iTextSharp

I’m using WebSite in ASP.NET and iTextSharp PDF library. I have a tiff document image that contains 3 pages, I would want to convert all those 3 tiff pages into 1 PDF file with 3 pages.
I try this but it doesn't work as well...
Please tell me what should I do?
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.IO;
Document document = new Document();
using (var stream = new FileStream(#"C:\File\0.pdf", FileMode.Create, FileAccess.Write, FileShare.None))
{
PdfWriter.GetInstance(document, stream);
document.Open();
using (var imageStream = new FileStream(#"C:\File\0.tiff", FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
var image = iTextSharp.text.Image.GetInstance(imageStream);
document.Add(image);
}
document.Close();
}

// creation of the document with a certain size and certain margins
iTextSharp.text.Document document = new iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 0, 0, 0, 0);
// creation of the different writers
iTextSharp.text.pdf.PdfWriter writer = iTextSharp.text.pdf.PdfWriter.GetInstance(document, new System.IO.FileStream(Server.MapPath("~/App_Data/result.pdf"), System.IO.FileMode.Create));
// load the tiff image and count the total pages
System.Drawing.Bitmap bm = new System.Drawing.Bitmap(Server.MapPath("~/App_Data/source.tif"));
int total = bm.GetFrameCount(System.Drawing.Imaging.FrameDimension.Page);
document.Open();
iTextSharp.text.pdf.PdfContentByte cb = writer.DirectContent;
for (int k = 0; k < total; ++k)
{
bm.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, k);
iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(bm, System.Drawing.Imaging.ImageFormat.Bmp);
// scale the image to fit in the page
img.ScalePercent(72f / img.DpiX * 100);
img.SetAbsolutePosition(0, 0);
cb.AddImage(img);
document.NewPage();
}
document.Close();

I just copied the code from this answer, and modified it to your example. So credits go to the person who answered the question in the link.
using (var stream = new FileStream(#"C:\File\0.pdf", FileMode.Create, FileAccess.Write, FileShare.None))
{
Document document = new Document(PageSize.A4, 0, 0, 0, 0);
var writer = PdfWriter.GetInstance(document, stream);
var bitmap = new System.Drawing.Bitmap(#"C:\File\0.tiff");
var pages = bitmap.GetFrameCount(System.Drawing.Imaging.FrameDimension.Page);
document.Open();
iTextSharp.text.pdf.PdfContentByte cb = writer.DirectContent;
for (int i = 0; i < pages; ++i)
{
bitmap.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, i);
iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(bitmap, System.Drawing.Imaging.ImageFormat.Bmp);
// scale the image to fit in the page
//img.ScalePercent(72f / img.DpiX * 100);
//img.SetAbsolutePosition(0, 0);
cb.AddImage(img);
document.NewPage();
}
}
document.Close();
}

What I achieved after a long period and based on some searches.
I make a request and the response is PDF or TIFF. The first part is just what I get and how I call the private methods, and that is what you need.
var httpResponse = (HttpWebResponse)(await httpWebRequest.GetResponseAsync());
Stream stream = httpResponse.GetResponseStream();
string contentType = httpResponse.ContentType;
MemoryStream ms = new MemoryStream();
stream.CopyTo(ms);
FileStream file2;
try
{
switch (contentType)
{
case "application/pdf":
{
string outputfile2 = Path.Combine(zipDirectory, "ixosid_" + icxos + ".pdf");
file2 = new FileStream(outputfile2, FileMode.Create, FileAccess.Write);
ms.WriteTo(file2);
file2.Close();
break;
}
default:
{
string outputfile1 = Path.Combine(zipDirectory, "ixosid_" + icxos + ".tiff");
file2 = new FileStream(outputfile1, FileMode.Create, FileAccess.Write);
ms.WriteTo(file2);
file2.Close();
string[] outfilesTiffPages = ConvertTiffToJpeg(outputfile1);
File.Delete(outputfile1);
string outputfile2 = Path.Combine(zipDirectory, "ixosid_" + icxos + ".pdf");
iTextSharp.text.Document doc= AddPicturesToPDF(outfilesTiffPages, outputfile2);
break;
}
}
}
and I have two private methods
private string[] ConvertTiffToJpeg(string fileName)
{
using (System.Drawing.Image imageFile = System.Drawing.Image.FromFile(fileName))
{
FrameDimension frameDimensions = new FrameDimension(
imageFile.FrameDimensionsList[0]);
// Gets the number of pages from the tiff image (if multipage)
int frameNum = imageFile.GetFrameCount(frameDimensions);
string[] jpegPaths = new string[frameNum];
for (int frame = 0; frame < frameNum; frame++)
{
// Selects one frame at a time and save as jpeg.
imageFile.SelectActiveFrame(frameDimensions, frame);
using (Bitmap bmp = new Bitmap(imageFile))
{
jpegPaths[frame] = String.Format(#"{0}\{1}{2}.jpg",
Path.GetDirectoryName(fileName),
Path.GetFileNameWithoutExtension(fileName),
frame);
bmp.Save(jpegPaths[frame], ImageFormat.Jpeg);
}
}
return jpegPaths;
}
}
private iTextSharp.text.Document AddPicturesToPDF(string[] filesPaths, string outputPdf)
{
FileStream fs = new FileStream(outputPdf, FileMode.Create);
Document pdfdoc = new Document();
PdfWriter.GetInstance(pdfdoc, fs);
pdfdoc.Open();
int size = filesPaths.Length;
int count = 0;
foreach(string imagePath in filesPaths)
{
iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(imagePath);
img.Alignment = Element.ALIGN_CENTER;
img.SetAbsolutePosition(0, 0);
img.ScaleToFit((PageSize.A4.Width - pdfdoc.RightMargin - pdfdoc.LeftMargin), (PageSize.A4.Height- pdfdoc.BottomMargin - pdfdoc.TopMargin));
pdfdoc.Add(img);
pdfdoc.NewPage();
}
pdfdoc.Close();
return pdfdoc;
}
Maybe I can work with MemoryStream but for now, is working and is what I need.
I searched a lot, and some links that deserve to be mentioned
https://coderedirect.com/questions/178295/convert-tiff-to-jpg-format

Add watermark on top of form fields

I have this code that will add a watermark on each page:
string watermarkLocation = AppDomain.CurrentDomain.BaseDirectory + "Watermark.png";
Document document = new Document();
PdfReader pdfReader = new PdfReader(fileLocation);
PdfStamper stamp = new PdfStamper(pdfReader, new FileStream(fileLocation.Replace(".pdf", "_marked.pdf"), FileMode.Create));
iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(watermarkLocation);
img.ScaleToFit(document.PageSize);
img.SetAbsolutePosition(0, 100);
PdfContentByte waterMark;
for (int page = 1; page <= pdfReader.NumberOfPages; page++)
{
waterMark = stamp.GetOverContent(page);
waterMark.AddImage(img);
}
stamp.FormFlattening = true;
stamp.Close();
return fileLocation.Replace(".pdf", "_marked.pdf");
But on PDFs that have textboxes, the image will go behind the textbox/form. I thought flattening the file will fix this, but it does not work.
I used a full image as a test but the watermark in the end will have transparency.

Here's the final code I'm using. As my comment mentioned, there's basically 2 readers/stamps, one to flatten the file and another to add the watermark.
Flatten file:
private byte[] FlattenPdfFormToBytes(PdfReader reader)
{
var memStream = new MemoryStream();
var stamper = new PdfStamper(reader, memStream) { FormFlattening = true };
stamper.Close();
return memStream.ToArray();
}
Add Watermark (which will call FlattenPdfFormToBytes):
public string AddWatermark(string fileLocation)
{
string watermarkLocation = AppDomain.CurrentDomain.BaseDirectory + "Watermark.png";
Document document = new Document();
PdfReader pdfReader = new PdfReader(fileLocation);
PdfReader pdfFlatten = new PdfReader(FlattenPdfFormToBytes(pdfReader)); // The secret sauce is this!!!
PdfStamper stamp = new PdfStamper(pdfFlatten, new FileStream(fileLocation.Replace(".pdf", "_marked.pdf"), FileMode.Create));
iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(watermarkLocation);
img.ScaleToFit(document.PageSize);
img.SetAbsolutePosition(0, 100);
PdfContentByte waterMark;
for (int page = 1; page <= pdfFlatten.NumberOfPages; page++)
{
waterMark = stamp.GetOverContent(page);
waterMark.AddImage(img);
}
stamp.Close();
return fileLocation.Replace(".pdf", "_marked.pdf");
}

Watermark a pdf document with itext 7 instead of iTextSharp

This was my code for itextsharp which worked ok. It displayed "Quote Only" in the middle of each page in a pdf file.
iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(Server.MapPath(#"~\Content\WaterMarkQuoteOnly.png"));
PdfReader readerOriginalDoc = new PdfReader(File(all, "application/pdf").FileContents);
int n = readerOriginalDoc.NumberOfPages;
img.SetAbsolutePosition(0, 300);
PdfGState _state = new PdfGState()
{
FillOpacity = 0.1F,
StrokeOpacity = 0.1F
};
using (MemoryStream ms = new MemoryStream())
{
using (PdfStamper stamper = new PdfStamper(readerOriginalDoc, ms, '\0', true))
{
for (int i = 1; i <= n; i++)
{
PdfContentByte content = stamper.GetOverContent(i);
content.SaveState();
content.SetGState(_state);
content.AddImage(img);
content.RestoreState();
}
}
//return ms.ToArray();
all = ms.GetBuffer();
}
This is my new itext 7 code, this also displays the watermark but the position is wrong. I was dismayed to see that you cant add an image to the canvas but you have to add ImageData when the position is being set on the image. The image is also way smaller and back to front.
var imagePath = Server.MapPath(#"~\Content\WaterMarkQuoteOnly.png");
var tranState = new iText.Kernel.Pdf.Extgstate.PdfExtGState();
tranState.SetFillOpacity(0.1f);
tranState.SetStrokeOpacity(0.1f);
ImageData myImageData = ImageDataFactory.Create(imagePath, false);
Image img = new Image(myImageData);
img.SetFixedPosition(0, 300);
var reader = new PdfReader(new MemoryStream(all));
var doc = new PdfDocument(reader);
int pages = doc.GetNumberOfPages();
using (var ms = new MemoryStream())
{
var writer = new PdfWriter(ms);
var newdoc = new PdfDocument(writer);
for (int i = 1; i <= pages; i++)
{
//get existing page
PdfPage page = doc.GetPage(i);
//copy page to new document
newdoc.AddPage(page.CopyTo(newdoc)); ;
//get our new page
PdfPage newpage = newdoc.GetPage(i);
Rectangle pageSize = newpage.GetPageSize();
//get canvas based on new page
var canvas = new PdfCanvas(newpage);
//write image data to new page
canvas.SaveState().SetExtGState(tranState);
canvas.AddImage(myImageData, pageSize, true);
canvas.RestoreState();
}
newdoc.Close();
all = ms.GetBuffer();
ms.Flush();
}

You are doing something strange with the PdfDocument objects, and you are also using the wrong AddImage() method.
I am not a C# developer, so I rewrote your example in Java. I took this PDF file:
And I took this image:
Then I added the image to the PDF file using transparency with the following result:
The code to do this, was really simple:
public void createPdf(String src, String dest) throws IOException {
PdfExtGState tranState = new PdfExtGState();
tranState.setFillOpacity(0.1f);
ImageData img = ImageDataFactory.create(IMG);
PdfReader reader = new PdfReader(src);
PdfWriter writer = new PdfWriter(dest);
PdfDocument pdf = new PdfDocument(reader, writer);
for (int i = 1; i <= pdf.getNumberOfPages(); i++) {
PdfPage page = pdf.getPage(i);
PdfCanvas canvas = new PdfCanvas(page);
canvas.saveState().setExtGState(tranState);
canvas.addImage(img, 36, 600, false);
canvas.restoreState();
}
pdf.close();
}
For some reason, you created two PdfDocument instances. This isn't necessary. You also used the AddImage() method passing a Rectangle which resizes the image. Also make sure that you don't add the image as an inline image, because that bloats the file size.
I don't know which programming language you are using. For instance: I am not used to variables that are created using var such as var tranState. It should be very easy for you to adapt my Java code though. It's just a matter of changing lowercases into uppercases.

Add image with text in header of every page in pdf file using itextsharp

When we use below code it add only one image. Is any other option to add image & text on every page?
private void AddHeader(string filephysicalpath, string nfile)
{
byte[] bytes = System.IO.File.ReadAllBytes(filephysicalpath);
String path = ConfigurationManager.AppSettings["Documentheader"].ToString() + Session["headerImg"];
Stream inputImageStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
Font blackFont = FontFactory.GetFont("Arial", 12, Font.BOLD, BaseColor.BLACK);
using (MemoryStream stream = new MemoryStream())
{
PdfReader reader = new PdfReader(bytes);
using (PdfStamper stamper = new PdfStamper(reader, stream))
{
int pages = reader.NumberOfPages;
for (int i = 1; i <= pages; i++)
{
string footer = Convert.ToString(Session["Footer"]);
if (Session["Footer"] != null)
{
// Phrase ft = new Phrase(footer, blackFont);
float marginLR = 36;
float marginB = 2;
float footerHeight = 10;
Rectangle pagesize = reader.GetCropBox(i);
if (pagesize == null)
{
pagesize = reader.GetPageSize(i);
}
Rectangle rect = new Rectangle(
pagesize.Left + marginLR, pagesize.Top + marginB,
pagesize.Right - marginLR, pagesize.Top + marginB + footerHeight
);
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(inputImageStream);
image.SetAbsolutePosition(rect.Left, rect.Top - image.ScaledHeight);
var pdfContentByte = stamper.GetOverContent(1);
pdfContentByte.AddImage(image);
inputImageStream.Seek(0L, SeekOrigin.Begin);
// ct.AddElement(new PdfPTableHeader (image));
}
}
}
reader.Close();
bytes = stream.ToArray();
}
System.IO.File.WriteAllBytes(filephysicalpath, bytes);
}

In your loop you do
var pdfContentByte = stamper.GetOverContent(1);
pdfContentByte.AddImage(image);
I.e. you always use the OverContent of page 1 and add the image to it. Instead you should use the OverContent of page i:
var pdfContentByte = stamper.GetOverContent(i);
pdfContentByte.AddImage(image);
Furthermore, you should import the image only once, i.e. move the line
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(inputImageStream);
above the loop.

Have you try to set inputImageStream to beggining before next use?
inputImageStream.Seek(0L, SeekOrigin.Begin);
Meybe its pointer is on the end of stream and next call return empty image?

ITextSharp insert text to an existing pdf

The title sums it all.
I want to add a text to an existing PDF file using iTextSharp, however i can't find how to do it anywhere in the web...
PS: I cannot use PDF forms.

I found a way to do it (dont know if it is the best but it works)
string oldFile = "oldFile.pdf";
string newFile = "newFile.pdf";
// open the reader
PdfReader reader = new PdfReader(oldFile);
Rectangle size = reader.GetPageSizeWithRotation(1);
Document document = new Document(size);
// open the writer
FileStream fs = new FileStream(newFile, FileMode.Create, FileAccess.Write);
PdfWriter writer = PdfWriter.GetInstance(document, fs);
document.Open();
// the pdf content
PdfContentByte cb = writer.DirectContent;
// select the font properties
BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252,BaseFont.NOT_EMBEDDED);
cb.SetColorFill(BaseColor.DARK_GRAY);
cb.SetFontAndSize(bf, 8);
// write the text in the pdf content
cb.BeginText();
string text = "Some random blablablabla...";
// put the alignment and coordinates here
cb.ShowTextAligned(1, text, 520, 640, 0);
cb.EndText();
cb.BeginText();
text = "Other random blabla...";
// put the alignment and coordinates here
cb.ShowTextAligned(2, text, 100, 200, 0);
cb.EndText();
// create the new page and add it to the pdf
PdfImportedPage page = writer.GetImportedPage(reader, 1);
cb.AddTemplate(page, 0, 0);
// close the streams and voilá the file should be changed :)
document.Close();
fs.Close();
writer.Close();
reader.Close();
I hope this can be usefull for someone =) (and post here any errors)

In addition to the excellent answers above, the following shows how to add text to each page of a multi-page document:
using (var reader = new PdfReader(#"C:\Input.pdf"))
{
using (var fileStream = new FileStream(#"C:\Output.pdf", FileMode.Create, FileAccess.Write))
{
var document = new Document(reader.GetPageSizeWithRotation(1));
var writer = PdfWriter.GetInstance(document, fileStream);
document.Open();
for (var i = 1; i <= reader.NumberOfPages; i++)
{
document.NewPage();
var baseFont = BaseFont.CreateFont(BaseFont.HELVETICA_BOLD, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
var importedPage = writer.GetImportedPage(reader, i);
var contentByte = writer.DirectContent;
contentByte.BeginText();
contentByte.SetFontAndSize(baseFont, 12);
var multiLineString = "Hello,\r\nWorld!".Split('\n');
foreach (var line in multiLineString)
{
contentByte.ShowTextAligned(PdfContentByte.ALIGN_LEFT, line, 200, 200, 0);
}
contentByte.EndText();
contentByte.AddTemplate(importedPage, 0, 0);
}
document.Close();
writer.Close();
}
}

This worked for me and includes using OutputStream:
PdfReader reader = new PdfReader(new RandomAccessFileOrArray(Request.MapPath("Template.pdf")), null);
Rectangle size = reader.GetPageSizeWithRotation(1);
using (Stream outStream = Response.OutputStream)
{
Document document = new Document(size);
PdfWriter writer = PdfWriter.GetInstance(document, outStream);
document.Open();
try
{
PdfContentByte cb = writer.DirectContent;
cb.BeginText();
try
{
cb.SetFontAndSize(BaseFont.CreateFont(), 12);
cb.SetTextMatrix(110, 110);
cb.ShowText("aaa");
}
finally
{
cb.EndText();
}
PdfImportedPage page = writer.GetImportedPage(reader, 1);
cb.AddTemplate(page, 0, 0);
}
finally
{
document.Close();
writer.Close();
reader.Close();
}
}

Here is a method that uses stamper and absolute coordinates showed in the different PDF clients (Adobe, FoxIt and etc. )
public static void AddTextToPdf(string inputPdfPath, string outputPdfPath, string textToAdd, System.Drawing.Point point)
{
//variables
string pathin = inputPdfPath;
string pathout = outputPdfPath;
//create PdfReader object to read from the existing document
using (PdfReader reader = new PdfReader(pathin))
//create PdfStamper object to write to get the pages from reader
using (PdfStamper stamper = new PdfStamper(reader, new FileStream(pathout, FileMode.Create)))
{
//select two pages from the original document
reader.SelectPages("1-2");
//gettins the page size in order to substract from the iTextSharp coordinates
var pageSize = reader.GetPageSize(1);
// PdfContentByte from stamper to add content to the pages over the original content
PdfContentByte pbover = stamper.GetOverContent(1);
//add content to the page using ColumnText
Font font = new Font();
font.Size = 45;
//setting up the X and Y coordinates of the document
int x = point.X;
int y = point.Y;
y = (int) (pageSize.Height - y);
ColumnText.ShowTextAligned(pbover, Element.ALIGN_CENTER, new Phrase(textToAdd, font), x, y, 0);
}
}

Here is a method To print over images:
taken from here.
Use a different layer for your text you're putting over the images, and also make sure to use the GetOverContent() method.
string oldFile = "FileWithImages.pdf";
string watermarkedFile = "Layers.pdf";
// Creating watermark on a separate layer
// Creating iTextSharp.text.pdf.PdfReader object to read the Existing PDF Document
PdfReader reader1 = new PdfReader(oldFile);
using (FileStream fs = new FileStream(watermarkedFile, FileMode.Create, FileAccess.Write, FileShare.None))
// Creating iTextSharp.text.pdf.PdfStamper object to write Data from iTextSharp.text.pdf.PdfReader object to FileStream object
using (PdfStamper stamper = new PdfStamper(reader1, fs))
{
// Getting total number of pages of the Existing Document
int pageCount = reader1.NumberOfPages;
// Create New Layer for Watermark
PdfLayer layer = new PdfLayer("Layer", stamper.Writer);
// Loop through each Page
for (int i = 1; i <= pageCount; i++)
{
// Getting the Page Size
Rectangle rect = reader1.GetPageSize(i);
// Get the ContentByte object
PdfContentByte cb = stamper.GetOverContent(i);
// Tell the cb that the next commands should be "bound" to this new layer
cb.BeginLayer(layer);
BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
cb.SetColorFill(BaseColor.RED);
cb.SetFontAndSize(bf, 100);
cb.BeginText();
cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, "Some random blablablabla...", rect.Width / 2, rect.Height / 2, - 90);
cb.EndText();
// Close the layer
cb.EndLayer();
}
}