Split PDF Documents using .NET PDF Library
26 Jun 202313 minutes to read
The Syncfusion .NET PDF library supports Splitting PDF file into single-page or multiple-page PDF documents.
Splitting a PDF file into individual pages
The Syncfusion .NET PDF library allows splitting the pages of an existing PDF document into multiple individual PDF documents using Split method of the PdfLoadedDocument class.
Refer to the following code example to split a PDF into individual pages.
//Due to platform limitations, Essential PDF supports splitting a PDF file into individual pages only in Windows Forms, WPF, ASP.NET, and ASP.NET MVC platforms. However this can be achieved by using the following code snippet.
//Load the PDF document
FileStream docStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream, true);
for (int i = 0; i < loadedDocument.Pages.Count; i++)
{
//Creates a new document.
PdfDocument document = new PdfDocument();
//Imports the pages from the loaded document.
document.ImportPage(loadedDocument, i);
//Create a File stream.
using (var outputFileStream = new FileStream("Output" + i + ".pdf", FileMode.Create, FileAccess.Write)) {
//Save the document to stream.
document.Save(outputFileStream);
}
//Close the document.
document.Close(true);
}//Load the PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf");
//Set a output path
const string destinationFilePattern = "Output" + "{0}.pdf";
//Split the pages into separate documents
loadedDocument.Split(destinationFilePattern);
//Close the document
loadedDocument.Close(true);'Load the PDF document
Dim loadedDocument As New PdfLoadedDocument("Input.pdf")
'Set a output path
Const destinationFilePattern As String = "Output" + "{0}.pdf"
'Split the pages into separate documents
loadedDocument.Split(destinationFilePattern)
'Close the document
loadedDocument.Close(True)You can download a complete working sample from GitHub.
Split a range of pages into a separate PDF document
The Syncfusion .NET PDF library allows splitting a certain range of pages into a separate PDF document using the SplitByRanges method of the PdfLoadedDocument class.
Refer to the following code example to split a range of pages.
//Load the existing PDF file.
PdfLoadedDocument loadDocument = new PdfLoadedDocument(new FileStream("Input.pdf", FileMode.Open));
//Subscribe to the document split event.
loadDocument.DocumentSplitEvent += LoadDocument_DocumentSplitEvent;
void LoadDocument_DocumentSplitEvent(object sender, PdfDocumentSplitEventArgs args)
{
//Save the resulting document.
FileStream outputStream = new FileStream(Guid.NewGuid().ToString() + ".pdf", FileMode.CreateNew);
args.PdfDocumentData.CopyTo(outputStream);
outputStream.Close();
}
//Spit the document by ranges.
loadDocument.SplitByRanges(new int[,] { { 0, 5 }, { 5, 10 } });
//Close the document.
loadDocument.Close(true);int[,] values = new int[,] { { 2, 5 }, { 8, 10 } };
//Load the PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf");
//Set a output path
const string destinationFilePattern = "Output" + "{0}.pdf";
//Split the pages into fixed number
loadedDocument.SplitByRanges(destinationFilePattern, values);
//close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument("Input.pdf")
'Set a output path
Const destinationFilePattern As String = "Output" + "{0}.pdf"
'Split the pages into fixed number.
loadedDocument.SplitByRanges(destinationFilePattern, values)
'Close the document.
loadedDocument.Close(True)Download a complete working sample from GitHub.
Split by a fixed number of pages into a PDF document
The Syncfusion .NET PDF library allows splitting by fixed number of pages of an existing PDF document using the SplitByFixedNumber method of the PdfLoadedDocument class.
Refer to the following code example to split by a fixed number of pages.
//Load the existing PDF file.
PdfLoadedDocument loadDocument = new PdfLoadedDocument(new FileStream("Input.pdf", FileMode.Open));
//Subscribe to the document split event.
loadDocument.DocumentSplitEvent += LoadDocument_DocumentSplitEvent;
void LoadDocument_DocumentSplitEvent(object sender, PdfDocumentSplitEventArgs args)
{
//Save the resulting document.
FileStream outputStream = new FileStream(Guid.NewGuid().ToString() + ".pdf", FileMode.CreateNew);
args.PdfDocumentData.CopyTo(outputStream);
outputStream.Close();
}
//Spit the document by a fixed number.
loadDocument.SplitByFixedNumber(2);
//Close the document.
loadDocument.Close(true);//Load the PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf");
//Set a output path
const string destinationFilePattern = "Output" + "{0}.pdf";
//Split the pages into fixed number
loadedDocument.SplitByFixedNumber(destinationFilePattern, 4);
//close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument("Input.pdf")
'Set a output path
Const destinationFilePattern As String = "Output" + "{0}.pdf"
'Split the pages into fixed number
loadedDocument.SplitByFixedNumber(destinationFilePattern, 4)
'Close the document.
loadedDocument.Close(True)Download a complete working sample from GitHub.
Split a PDF document based on PDF bookmarks
A PDF document may contain bookmarks that indicate different sections.The Syncfusion .NET PDF library allows splitting a PDF document into sections using the PdfBookmark class.
Refer to the following code example to split a PDF using bookmarks.
// Load the PDF document
using (FileStream fileStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read))
using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileStream))
{
PdfBookmarkBase bookmarks = loadedDocument.Bookmarks;
// Iterate all the bookmarks and their page ranges
foreach (PdfBookmark bookmark in bookmarks)
{
if (bookmark.Destination != null)
{
if (bookmark.Destination.Page != null)
{
int endIndex = bookmark.Destination.PageIndex;
// Create a new PDF document
using (PdfDocument document = new PdfDocument())
{
foreach (PdfLoadedBookmark childBookmark in bookmark)
{
endIndex = childBookmark.Destination.PageIndex;
}
// Import the pages to the new PDF document
document.ImportPageRange(loadedDocument, bookmark.Destination.PageIndex, endIndex);
//Save the document as stream
using (MemoryStream stream = new MemoryStream())
{
document.Save(stream);
}
}
}
}
}
}// Load the PDF document
using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf"))
{
PdfBookmarkBase bookmarks = loadedDocument.Bookmarks;
// Iterate all the bookmarks and their page ranges
foreach (PdfBookmark bookmark in bookmarks)
{
if (bookmark.Destination != null)
{
if (bookmark.Destination.Page != null)
{
int endIndex = bookmark.Destination.PageIndex;
// Create a new PDF document
using (PdfDocument document = new PdfDocument())
{
foreach (PdfLoadedBookmark childBookmark in bookmark)
{
endIndex = childBookmark.Destination.PageIndex;
}
// Import the pages to the new PDF document
document.ImportPageRange(loadedDocument, bookmark.Destination.PageIndex, endIndex);
//Save the document as stream
document.Save("Output.pdf");
}
}
}
}
}Using loadedDocument As PdfLoadedDocument = New PdfLoadedDocument("Input.pdf")
Dim bookmarks As PdfBookmarkBase = loadedDocument.Bookmarks
For Each bookmark As PdfBookmark In bookmarks
If bookmark.Destination IsNot Nothing Then
If bookmark.Destination.Page IsNot Nothing Then
Dim endIndex As Integer = bookmark.Destination.PageIndex
Using document As PdfDocument = New PdfDocument()
For Each childBookmark As PdfLoadedBookmark In bookmark
endIndex = childBookmark.Destination.PageIndex
Next
document.ImportPageRange(loadedDocument, bookmark.Destination.PageIndex, endIndex)
document.Save("Output.pdf")
End Using
End If
End If
Next
End UsingDownload a complete working sample from GitHub.