Iron Suite vs Spire.Office

// Spire.Doc converts and edits Word documents without Office installed.
// NuGet: Install-Package Spire.Office
using Spire.Doc;

class Program
{
    static void Main()
    {
        Document doc = new Document();
        doc.LoadFromFile("contract.docx");
        doc.SaveToFile("contract.pdf", FileFormat.PDF);
        doc.Close();
    }
}

Imports Spire.Doc

Class Program
    Shared Sub Main()
        Dim doc As New Document()
        doc.LoadFromFile("contract.docx")
        doc.SaveToFile("contract.pdf", FileFormat.PDF)
        doc.Close()
    End Sub
End Class

// NuGet: Install-Package IronWord
using IronWord;
using IronWord.Models;

class Program
{
    static void Main()
    {
        var doc = new WordDocument();
        var heading = new Paragraph();
        heading.AddChild(new TextRun("Quarterly Report — Q1 2026") { FontSize = 18, Bold = true });
        doc.AddParagraph(heading);

        var body = new Paragraph();
        body.AddChild(new TextRun("Revenue grew 14% quarter-over-quarter."));
        doc.AddParagraph(body);

        doc.SaveAs("report.docx");
    }
}

Imports IronWord
Imports IronWord.Models

Class Program
    Shared Sub Main()
        Dim doc As New WordDocument()
        Dim heading As New Paragraph()
        heading.AddChild(New TextRun("Quarterly Report — Q1 2026") With {.FontSize = 18, .Bold = True})
        doc.AddParagraph(heading)

        Dim body As New Paragraph()
        body.AddChild(New TextRun("Revenue grew 14% quarter-over-quarter."))
        doc.AddParagraph(body)

        doc.SaveAs("report.docx")
    End Sub
End Class

// Spire.XLS handles XLSX read/write, formula recalculation, and PDF export.
using Spire.Xls;

class Program
{
    static void Main()
    {
        Workbook book = new Workbook();
        book.LoadFromFile("financials.xlsx");
        book.CalculateAllValue();
        book.ConverterSetting.SheetFitToPage = true;
        book.SaveToFile("financials.pdf", FileFormat.PDF);
    }
}

Imports Spire.Xls

Class Program
    Shared Sub Main()
        Dim book As New Workbook()
        book.LoadFromFile("financials.xlsx")
        book.CalculateAllValue()
        book.ConverterSetting.SheetFitToPage = True
        book.SaveToFile("financials.pdf", FileFormat.PDF)
    End Sub
End Class

// NuGet: Install-Package IronXL.Excel
using IronXL;

class Program
{
    static void Main()
    {
        WorkBook workbook = WorkBook.Create(ExcelFileFormat.XLSX);
        WorkSheet sheet = workbook.CreateWorkSheet("Sales");

        sheet["A1"].Value = "Product";
        sheet["B1"].Value = "Units";
        sheet["A2"].Value = "Widget A";
        sheet["B2"].Value = 1024;
        sheet["A3"].Value = "Widget B";
        sheet["B3"].Value = 768;
        sheet["B4"].Formula = "=SUM(B2:B3)";

        workbook.EvaluateAll();
        workbook.SaveAs("sales.xlsx");
    }
}

Imports IronXL

Module Program
    Sub Main()
        Dim workbook As WorkBook = WorkBook.Create(ExcelFileFormat.XLSX)
        Dim sheet As WorkSheet = workbook.CreateWorkSheet("Sales")

        sheet("A1").Value = "Product"
        sheet("B1").Value = "Units"
        sheet("A2").Value = "Widget A"
        sheet("B2").Value = 1024
        sheet("A3").Value = "Widget B"
        sheet("B3").Value = 768
        sheet("B4").Formula = "=SUM(B2:B3)"

        workbook.EvaluateAll()
        workbook.SaveAs("sales.xlsx")
    End Sub
End Module

// Spire.PDF builds PDFs primitive-by-primitive on a page canvas.
using Spire.Pdf;
using Spire.Pdf.Graphics;
using System.Drawing;

class Program
{
    static void Main()
    {
        PdfDocument pdf = new PdfDocument();
        PdfPageBase page = pdf.Pages.Add();

        PdfTrueTypeFont titleFont = new PdfTrueTypeFont(new Font("Arial", 20f, FontStyle.Bold), true);
        page.Canvas.DrawString("Statement of Account", titleFont, PdfBrushes.Black, 50, 50);

        PdfTrueTypeFont body = new PdfTrueTypeFont(new Font("Arial", 11f), true);
        page.Canvas.DrawString("Generated 2026-05-26", body, PdfBrushes.DarkSlateGray, 50, 90);

        pdf.SaveToFile("statement.pdf");
        pdf.Close();
    }
}

Imports Spire.Pdf
Imports Spire.Pdf.Graphics
Imports System.Drawing

Class Program
    Shared Sub Main()
        Dim pdf As New PdfDocument()
        Dim page As PdfPageBase = pdf.Pages.Add()

        Dim titleFont As New PdfTrueTypeFont(New Font("Arial", 20.0F, FontStyle.Bold), True)
        page.Canvas.DrawString("Statement of Account", titleFont, PdfBrushes.Black, 50, 50)

        Dim body As New PdfTrueTypeFont(New Font("Arial", 11.0F), True)
        page.Canvas.DrawString("Generated 2026-05-26", body, PdfBrushes.DarkSlateGray, 50, 90)

        pdf.SaveToFile("statement.pdf")
        pdf.Close()
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        string html = @"<h1>Invoice 2026-0428</h1><p>Customer: Acme Corp</p><p>Total due: $1,240.00</p>";
        using var pdf = renderer.RenderHtmlAsPdf(html);
        pdf.SaveAs("invoice.pdf");
    }
}

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim html As String = "<h1>Invoice 2026-0428</h1><p>Customer: Acme Corp</p><p>Total due: $1,240.00</p>"
        Using pdf = renderer.RenderHtmlAsPdf(html)
            pdf.SaveAs("invoice.pdf")
        End Using
    End Sub
End Class

// Spire.Presentation reads/writes PPTX and exports to PDF or image without PowerPoint installed.
using Spire.Presentation;

class Program
{
    static void Main()
    {
        Presentation pres = new Presentation();
        pres.LoadFromFile("kickoff-deck.pptx");
        pres.SaveToFile("kickoff-deck.pdf", FileFormat.PDF);
        pres.Dispose();
    }
}

Imports Spire.Presentation

Class Program
    Shared Sub Main()
        Dim pres As New Presentation()
        pres.LoadFromFile("kickoff-deck.pptx")
        pres.SaveToFile("kickoff-deck.pdf", FileFormat.PDF)
        pres.Dispose()
    End Sub
End Class

// NuGet: Install-Package IronPPT
// Docs: https://ironsoftware.com/csharp/ppt/docs/
using IronPPT;
using IronPPT.Models;

class Program
{
    static void Main()
    {
        // PresentationDocument is the entry point for PPTX creation in IronPPT.
        // No Microsoft PowerPoint or Office Interop required.
        PresentationDocument document = new PresentationDocument();

        Slide titleSlide = new Slide();
        titleSlide.AddText("Quarterly Update");
        document.AddSlide(titleSlide);

        Slide bodySlide = new Slide();
        bodySlide.AddText("Generated from .NET, no PowerPoint dependency.");
        document.AddSlide(bodySlide);

        document.Save("update.pptx");
    }
}

Imports IronPPT
Imports IronPPT.Models

Module Program
    Sub Main()
        ' PresentationDocument is the entry point for PPTX creation in IronPPT.
        ' No Microsoft PowerPoint or Office Interop required.
        Dim document As New PresentationDocument()

        Dim titleSlide As New Slide()
        titleSlide.AddText("Quarterly Update")
        document.AddSlide(titleSlide)

        Dim bodySlide As New Slide()
        bodySlide.AddText("Generated from .NET, no PowerPoint dependency.")
        document.AddSlide(bodySlide)

        document.Save("update.pptx")
    End Sub
End Module

// Spire.Barcode generates and decodes 1D/2D symbologies; bundled into Spire.Office.
using Spire.Barcode;

class Program
{
    static void Main()
    {
        BarcodeSettings settings = new BarcodeSettings
        {
            Type = BarCodeType.QRCode,
            Data = "https://example.com/inv/2026-44213",
            Data2D = "https://example.com/inv/2026-44213",
            X = 1.5f
        };

        BarCodeGenerator generator = new BarCodeGenerator(settings);
        System.Drawing.Image image = generator.GenerateImage();
        image.Save("invoice-qr.png");
    }
}

Imports Spire.Barcode
Imports System.Drawing

Class Program
    Shared Sub Main()
        Dim settings As New BarcodeSettings With {
            .Type = BarCodeType.QRCode,
            .Data = "https://example.com/inv/2026-44213",
            .Data2D = "https://example.com/inv/2026-44213",
            .X = 1.5F
        }

        Dim generator As New BarCodeGenerator(settings)
        Dim image As Image = generator.GenerateImage()
        image.Save("invoice-qr.png")
    End Sub
End Class

// NuGet: Install-Package IronBarcode
using IronBarCode;

class Program
{
    static void Main()
    {
        var results = BarcodeReader.Read("shipment-label.png");
        foreach (var barcode in results)
        {
            Console.WriteLine($"Value: {barcode.Value}");
            Console.WriteLine($"Format: {barcode.BarcodeType}");
        }
    }
}

Imports IronBarCode

Class Program
    Shared Sub Main()
        Dim results = BarcodeReader.Read("shipment-label.png")
        For Each barcode In results
            Console.WriteLine($"Value: {barcode.Value}")
            Console.WriteLine($"Format: {barcode.BarcodeType}")
        Next
    End Sub
End Class