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#1 Posted : Wednesday, August 21, 2019 1:32:37 PM(UTC)


Groups: Registered
Posts: 2

I am trying to load a PDFDocument from a PDF, then edit that PDF and save the edited PDF to my machine.

For my example I have a PDF that has 1 page and some text on it, I see the text in the PDFDocument as Page Objects.

I want to delete all text from the PDF and save it, just to demonstrate that I can edit a PDF and save the result .


var path = new DirectoryInfo(Path.Combine("..|StaticFiles|TestPDF.pdf".Split('|')));

var pdfDocument = new PDFDocument(path.ToString());

var firstPage = pdfDocument.Pages.Select(e => e.PageNumber).Min();
var lastPage = pdfDocument.Pages.Select(e => e.PageNumber).Max();

pdfDocument.ParsePages(PDFParsePagesOptions.All, firstPage, lastPage);

foreach (var page in pdfDocument.Pages)

var path2 = new DirectoryInfo(Path.Combine("..|StaticFiles|TestPDF1.pdf".Split('|')));
if (System.IO.File.Exists(path2.ToString()))
	// So we won't append to it twice 

using (RasterCodecs codecs = new RasterCodecs())
	// For each page... 
	for (int i = 1; i <= pdfDocument.Pages.Count; i++)
		// Get the page as a raster image 
		using (RasterImage image = pdfDocument.GetPageImage(codecs, i))
			// Save it to the destination file 
			codecs.Save(image, path2.ToString(), RasterImageFormat.RasPdf, 24, 1, 1, -1, CodecsSavePageMode.Append);

This code will save the PDF in the selected location, but the pdf is not altered. How can I edit the PDFDocument and Save its result?

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