using System;

using Aspose.Words; // NuGet: Aspose.Words

using Spire.Doc; // NuGet: Spire.Doc

using Syncfusion.DocIO; // NuGet: Syncfusion.DocIO.NET

using Syncfusion.DocIO.DLS;

using GemBox.Document; // NuGet: GemBox.Document

​

public class Program

{

    public static void Main()

    {

        AsposeWords_Test();

        SpireDoc_Test();

        SyncFusionWord_Test();

        GemBoxDocument_Test();

    }

    public static void AsposeWords_Test()

    {

        Aspose.Words.Document doc = new Aspose.Words.Document("input.docx");

        doc.Save("output1.pdf");

    }

    public static void SpireDoc_Test()

    {

        Spire.Doc.Document doc = new Spire.Doc.Document("input.docx");

        doc.SaveToFile("output2.pdf", Spire.Doc.FileFormat.PDF);

    }

    public static void SyncFusionWord_Test()

    {

        WordDocument document = new WordDocument("input.docx");

        document.Save("output3.pdf", FormatType.Automatic);

    }

    public static void GemBoxDocument_Test()

    {

        DocumentModel.Load("input.docx").Save("output4.pdf");

    }

}