Editing PDFs

C# + VB.Net: Editing PDFs Editing PDFs 
// Install IronPdf with Nuget:  PM> Install-Package IronPdf
using IronPdf;
using System.Collections.Generic;

var Renderer = new IronPdf.HtmlToPdf();

// Join Multiple Existing PDFs into a single document
var PDFs     = new List<PdfDocument>();
PDFs.Add(PdfDocument.FromFile("A.pdf"));
PDFs.Add(PdfDocument.FromFile("B.pdf"));
PDFs.Add(PdfDocument.FromFile("C.pdf"));
PdfDocument PDF =  PdfDocument.Merge(PDFs);
PDF.SaveAs("merged.pdf");

// Add a cover page
PDF.PrependPdf(Renderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"));

// Remove the last page from the PDF and save again
PDF.RemovePage(PDF.PageCount - 1);
PDF.SaveAs("merged.pdf");

// Copy pages 5-7 and save them as a new document.
PDF.CopyPages(4,6).SaveAs("exerpt.pdf");
' Install IronPdf with Nuget:  PM> Install-Package IronPdf
Imports IronPdf
Imports System.Collections.Generic

Private Renderer = New IronPdf.HtmlToPdf()

' Join Multiple Existing PDFs into a single document
Private PDFs = New List(Of PdfDocument)()
PDFs.Add(PdfDocument.FromFile("A.pdf"))
PDFs.Add(PdfDocument.FromFile("B.pdf"))
PDFs.Add(PdfDocument.FromFile("C.pdf"))
Dim PDF As PdfDocument = PdfDocument.Merge(PDFs)
PDF.SaveAs("merged.pdf")

' Add a cover page
PDF.PrependPdf(Renderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"))

' Remove the last page from the PDF and save again
PDF.RemovePage(PDF.PageCount - 1)
PDF.SaveAs("merged.pdf")

' Copy pages 5-7 and save them as a new document.
PDF.CopyPages(4,6).SaveAs("exerpt.pdf")

IronPDF allows many PDF file editing manipulations. The most popular are merging, cloning and extracting pages.

PDF may also be watermarked, stamped and have backgrounds and foregrounds applied.

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