Spire.Cloud.PDF provides the PdfDocumentApi interface, which can be used to manipulate the entire document. This article demonstrates how to merge PDFs or split a PDF document by using this API.

Example 1. Merge PDF documents

using System;
using System.Collections.Generic;
using Spire.Cloud.Pdf.Sdk.Api;
using Spire.Cloud.Pdf.Sdk.Client;

namespace MergePDFs
{
    class Program
    {
        static String appId = "App ID";
        static String appKey = "App Key";
        static String baseUrl = "https://api.cloudxdocs.com";

        //Create a Configuration object based on App ID, App Key and base URL
        static Configuration pdfConfiguration = new Configuration(appId, appKey, baseUrl);

        //Create a PdfDocumentApi object
        static PdfDocumentApi pdfDocumentApi = new PdfDocumentApi(pdfConfiguration);
    
        static void Main(string[] args)
        {
            //Specify resulted file name
            string name = "Merged.pdf";

            //Specify output file folder
            string outFolder = "output";

            //Create a List object
            List files = new List();

            //Add paths of the files to be merged in the list
            files.Add("input/test1.pdf");
            files.Add("input/test2.pdf");

            //Call MergeDocument method to merge files 
            pdfDocumentApi.MergeDocument(name, files, outFolder);

        }
    }
}

Example 2. Split PDF document

using System;
using Spire.Cloud.Pdf.Sdk.Api;
using Spire.Cloud.Pdf.Sdk.Client;

namespace SplitPDF
{
    class Program
    {
        static String appId = "App ID";
        static String appKey = "App Key";
        static String baseUrl = "https://api.cloudxdocs.com";

        //Create a Configuration object based on App ID, App Key and base URL
        static Configuration pdfConfiguration = new Configuration(appId, appKey, baseUrl);

        //Create a PdfDocumentApi object
        static PdfDocumentApi pdfDocumentApi = new PdfDocumentApi(pdfConfiguration);

        static void Main(string[] args)
        {
            //Specify the source document name
            string name = "sample.pdf";

            //Specify the folder where the source document is stored
            string folder = "input";

            //Use the default storage, set to null
            string storage = null;

            //Specify the output path
            string outPath = "output/";

            //Call SplitDocument method to split PDF into one-page PDF documents
            pdfDocumentApi.SplitDocument(name, outPath, folder, storage);
        }
    }
}