Add Page Number to PDF with C#

All the documents must have page numbers in it. The page number makes it easier for the reader to locate different parts of the document. Aspose.PDF for .NET allows you to add page numbers with PageNumberStamp.

You can use PageNumberStamp class to add a page number stamp in a PDF file. PageNumber Stamp class provides properties necessary to create a page number based stamp like format, margins, alignments, starting number etc. In order to add page number stamp, you need to create a Document object and a PageNumberStamp object using required properties. After that, you can call AddStamp method of the Page to add the stamp in the PDF. You can also set the font attributes of the page number stamp. The following code snippet shows you how to add page numbers in a PDF file.

// For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.PDF-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_StampsWatermarks();

// Open document
Document pdfDocument = new Document(dataDir+ "PageNumberStamp.pdf");

// Create page number stamp
PageNumberStamp pageNumberStamp = new PageNumberStamp();
// Whether the stamp is background
pageNumberStamp.Background = false;
pageNumberStamp.Format = "Page # of " + pdfDocument.Pages.Count;
pageNumberStamp.BottomMargin = 10;
pageNumberStamp.HorizontalAlignment = HorizontalAlignment.Center;
pageNumberStamp.StartingNumber = 1;
// Set text properties
pageNumberStamp.TextState.Font = FontRepository.FindFont("Arial");
pageNumberStamp.TextState.FontSize = 14.0F;
pageNumberStamp.TextState.FontStyle = FontStyles.Bold;
pageNumberStamp.TextState.FontStyle = FontStyles.Italic;
pageNumberStamp.TextState.ForegroundColor = Color.Aqua;

// Add stamp to particular page
pdfDocument.Pages[1].AddStamp(pageNumberStamp);

dataDir = dataDir + "PageNumberStamp_out.pdf";
// Save output document
pdfDocument.Save(dataDir);

Live Example

Add PDF page numbers is an online free web application that allows you to investigate how adding page numbers functionality works.

How to add page number in pdf using C#

Add/Remove Bates numbering

Bates numbering (also known as Bates stamping) is used in the legal, medical, and business fields to place identifying numbers and/or date/time-marks on images and documents as they are scanned or processed, for example, during the discovery stage of preparations for trial or identifying business receipts. This process provides identification, protection, and automatic consecutive numbering of the images or documents.

Aspose.PDF has limited support for Bates Numbering for now. This functionality will be updated according to customers’ requests.

How to remove Bates nubmering

static void Demo03()
{
    Document doc = new Document(@"C:\Samples\Sample-Document03.pdf");
    foreach (var page in doc.Pages)
    {
        var batesNum = page.Artifacts.First(ar => ar.CustomSubtype == "BatesN");
        page.Artifacts.Delete(batesNum);
    }
    doc.Save(@"C:\Samples\Sample-Document04.pdf");
}