How to split one PDF file into multiple PDF files?

Syncfusion Essential® PDF is a .NET PDF library used to create, read, and edit PDF documents. Using this library, you can split the pages of a single PDF document into multiple individual PDF documents. 

Steps to split pages in PDF programmatically:

1. Create a new C# console application project.
2. Install the Syncfusion.Pdf.WinForms NuGet package as reference to your .NET Framework applications from NuGet.org.
3. Include the following namespace in the Program.cs file.

C#

using Syncfusion.Pdf.Parsing;

VB.NET

Imports Syncfusion.Pdf.Parsing

4. Use the Split() method with destinationFilePattern parameter that allows you to split the pages of an existing PDF document into multiple individual PDF documents.

C#

//Sets pattern
const string destinationFilePattern = "Output" + "{0}.pdf";
 
//Split the pages into separate documents
loadedDocument.Split(destinationFilePattern);

5. Use the following C# and VB.NET code snippet that shows how to split the pages of an existing PDF document into multiple individual PDF documents.

C#

//Load document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(DataPathBase + "sample.pdf");
 
//Sets pattern
const string destinationFilePattern = "Output" + "{0}.pdf";
 
//Split the pages into separate documents
loadedDocument.Split(destinationFilePattern);
 
//close the document
loadedDocument.Close(true);

VB.NET

'Load document
Dim loadedDocument As PdfLoadedDocument = New PdfLoadedDocument((DataPathBase + "sample.pdf"))
 
'Sets pattern
Dim destinationFilePattern As String = ("Output" + "{0}.pdf")
 
'Split the pages into separate documents
loadedDocument.Split(destinationFilePattern)
 
'close the document
loadedDocument.Close(True)

A complete working sample can be downloaded from Split-PDF-File.zip.

By executing the program, you will get the PDF document as follows.

Take a moment to peruse the documentation, where you can find the insert and import the pages with Essential PDF, and the brief details about OCR processing , Image Extraction , Merge Document and so on with code examples.

Refer here to explore the rich set of Syncfusion Essential® PDF features.

An online sample link to split PDF document