Merge or split PDF, Word, Excel, PowerPoint files, eBooks, and images

PM> Install-Package GroupDocs.Merger 

  // Load the source PDF document
using (Merger merger = new Merger(@"c:\sample1.pdf"))
{
    // Add a PDF file to merge
    merger.Join(@"c:\sample2.pdf");
    // Merge both PDF files and save the result
    merger.Save(@"c:\merged.pdf");
} 

using (Merger merger = new Merger(@"c:\document1.pdf"))
{
      // Add the multi-format documents to merge 
     merger.Join(@"c:\document2.doc");
    merger.Join(@"c:\document3.ppt");
    merger.Join(@"c:\document4.xls");

	// Merge all documents into a single PDF file 
	merger.Save(@"c:\merged.pdf");
}  

    // Load the source DOCX file
using (Merger merger = new Merger(@"c:\sample1.docx"))
{
    // Add another DOCX file to merge
    merger.Join(@"c:\sample2.docx");
    // Merge DOCX files and save the result
    merger.Save(@"c:\merged.docx");
}    

        string filePath = @"c:\sample1.docx";
        string filePath2 = @"c:\sample2.docx";
        string filePathOut = @"c:\output\result.docx";
        
        JoinOptions joinOptions = new JoinOptions(1, 4, RangeMode.OddPages);
        
        using (Merger merger = new Merger(filePath, loadOptions))
        {
            merger.Join(filePath2, joinOptions);
            merger.Save(filePathOut);
        }           

// Load the source image file
using (Merger merger = new Merger(@"c:\sample1.jpg"))
{
    // Define image join options with horizontal join mode
    ImageJoinOptions joinOptions = new ImageJoinOptions(ImageJoinMode.Horizontal);
    // Add another image file to merge
    merger.Join(@"c:\sample2.jpg", joinOptions);
    // Define image join options with vertical join mode
    joinOptions = new ImageJoinOptions(ImageJoinMode.Vertical);
    // Add the next image file to merge
    merger.Join(@"c:\sample3.jpg", joinOptions);
    // Merge image files and save the result
    merger.Save(@"c:\merged.jpg");
} 

// Load the source image file
Merger merger = new Merger("c:\sample1.jpg")
// Define image join options with horizontal join mode
ImageJoinOptions joinOptions = new ImageJoinOptions(ImageJoinMode.Horizontal);
// Add another image file to merge
merger.join("c:\sample2.jpg", joinOptions);
// Define image join options with vertical join mode
joinOptions = new ImageJoinOptions(ImageJoinMode.Vertical);
// Add the next image file to merge
merger.join("c:\sample3.jpg", joinOptions);
// Merge image files and save the result
merger.save("c:\merged.jpg"); 

string filePath = @"c:\sample.pdf";
string filePathOut = @"c:\output\document_{0}.{1}";
// Define page numbers in SplitOptions
SplitOptions splitOptions = new SplitOptions(filePathOut, new int[] { 3, 6, 8 });
// Split the document based on the specified split options
using (Merger merger = new Merger(filePath))
{
     merger.Split(splitOptions);
}

String filePath = "document.pdf";
String filePathOut = "document\_{0}.{1}";
// Specify page numbers and split the file into multiple single-page documents.
SplitOptions splitOptions = new SplitOptions(filePathOut, new int\[\] { 3, 6, 8 });
Merger merger = new Merger(filePath);
merger.split(splitOptions); 

string filePath = @"c:\sample.pdf";
string filePathOut = @"c:\output\result.pdf";
// Resultant document will contain pages 1 and 4
ExtractOptions extractOptions = new ExtractOptions(new int[] { 1, 4 }); 
using (Merger merger = new Merger(filePath))
{
    merger.ExtractPages(extractOptions);
    merger.Save(filePathOut);
} 

string filePath = @"c:\sample.pdf";
string filePathOut = @"c:\output\result.pdf";

RotateOptions rotateOptions = new RotateOptions(RotateMode.Rotate180, new int[] { 2, 3, 6 });

using (Merger merger = new Merger(filePath))
{
    merger.RotatePages(rotateOptions);
    merger.Save(filePathOut);
} 

String filePath = "c:\sample.pptx";
String filePathOut = "c:\output\result.pptx";
// Set page numbers to be swapped
int pageNumber1 = 3;
int pageNumber2 = 6;
// Define swap options based on the selected page numbers
SwapOptions swapOptions = new SwapOptions(pageNumber2, pageNumber1);
Merger merger = new Merger(filePath);        
merger.swapPages(swapOptions);
merger.save(filePathOut); 

String filePath = "c:\sample.one";
String filePathOut = "c:\output\result.one";
// Define the pages to be removed
RemoveOptions removeOptions = new RemoveOptions(new int[] { 3, 5 });
// Process the page removal file operation
Merger merger = new Merger(filePath);

merger.removePages(removeOptions);
merger.save(filePathOut);