Add Page Number to PDF

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.

The following code snippet also work with Aspose.PDF.Drawing library.

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, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void AddPageNumberToPdf()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_StampsWatermarks();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "PageNumberStamp.pdf"))
    {
        // Create page number stamp
        var pageNumberStamp = new Aspose.Pdf.PageNumberStamp();
        // Whether the stamp is background
        pageNumberStamp.Background = false;
        pageNumberStamp.Format = "Page # of " + document.Pages.Count;
        pageNumberStamp.BottomMargin = 10;
        pageNumberStamp.HorizontalAlignment = HorizontalAlignment.Center;
        pageNumberStamp.StartingNumber = 1;
        // Set text properties
        pageNumberStamp.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("Arial");
        pageNumberStamp.TextState.FontSize = 14.0F;
        pageNumberStamp.TextState.FontStyle = Aspose.Pdf.Text.FontStyles.Bold;
        pageNumberStamp.TextState.FontStyle = Aspose.Pdf.Text.FontStyles.Italic;
        pageNumberStamp.TextState.ForegroundColor = Color.Aqua;
        // Add stamp to particular page
        document.Pages[1].AddStamp(pageNumberStamp);
        // Save PDF document
        document.Save(dataDir + "PageNumberStamp_out.pdf");  
    }
}

Live Example

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

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 numbering

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void RemoveBatesNumbering()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_StampsWatermarks();
    
    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "RemoveBatesNumberingInput.pdf"))
    {
        foreach (var page in document.Pages)
        {
            // Remove bates numbering
            var artifacts = page.Artifacts.Where(ar => ar.CustomSubtype == "BatesN");
            foreach (var artifact in artifacts)
            {
                page.Artifacts.Delete(artifact);   
            }
        }
        // Save PDF document
        document.Save(dataDir + "RemoveBatesNumbering_out.pdf");
    }
}