Split PDFs in C# with the .NET PDF Library

Step 1: Create a new C# Console Application project

Begin by creating a new C# Console Application project in Visual Studio or your preferred IDE to implement PDF splitting functionality.

Step 2: Install Syncfusion PDF NuGet package

Install the Syncfusion.Pdf.Net.Core NuGet package in your C# project from NuGet.org. This package provides APIs for splitting PDF documents into separate files.

Step 3: Add required s for PDF splitting

Import the following namespace in your Program.cs file to access PDF document parsing and page manipulation methods:

using Syncfusion.Pdf.Parsing;

Step 4: Load the PDF document to split

Use the PdfLoadedDocument class to load your existing PDF file that contains multiple pages you want to split into separate documents.

//Load the PDF document
using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument(Path.GetFullPath(@"Data/Input.pdf")))
{
}

Step 5: Split the PDF into individual page documents

Use the Split method to separate each page of the PDF into individual documents. The method accepts a file path pattern with {0} as a placeholder for the page number.

Run

//Split the pages into separate documents
loadedDocument.Split(Path.GetFullPath(@"Output/Output"+ "{0}.pdf"));