IronPDF vs PDFSharpCore: Welche .NET-PDF-Bibliothek sollten Sie im Jahr 2025 wählen?

Was ist IronPDF?

IronPDF ist eine umfassende kommerzielle .NET-Bibliothek, die entwickelt wurde, um die PDF-Erstellung, -Bearbeitung und -Manipulation für Entwickler mühelos zu machen. Auf einem Chrome-basierten Rendering-Engine aufgebaut, ist es hervorragend darin, HTML-, CSS- und JavaScript-Inhalte in pixelgenaue PDFs zu konvertieren. Die Bibliothek bietet ein umfangreiches Funktionsset, das HTML-zu-PDF-Konvertierung, digitale Signaturen, Wasserzeichenerstellung, PDF-Verschlüsselung und Formularverwaltung umfasst.

IronPDF unterstützt moderne .NET-Versionen, einschließlich .NET 10, 9, 8, 7, 6, 5, Core 3.1+ und Framework 4.6.2+, wodurch es vielseitig für neue und ältere Anwendungen ist. Seine cloud-optimierte Architektur gewährleistet nahtlose Bereitstellung in Azure-, AWS- und Docker-Umgebungen.

Was ist PDFSharpCore?

PDFSharpCore ist eine Open-Source-Bibliothek, die als .NET Core-Port der ursprünglichen PDFsharp-Bibliothek dient. Veröffentlicht unter der MIT-Lizenz, konzentriert es sich auf die programmgesteuerte PDF-Erstellung und grundlegende Manipulation ohne die Verwendung von Windows-spezifischen Bibliotheken. Dies macht es zu einer hervorragenden Wahl für plattformübergreifende Projekte, die auf Linux, macOS und Windows laufen.

Während PDFSharpCore keine native HTML-zu-PDF-Konvertierung bietet, bietet es präzise Kontrolle über die Erstellung von PDF-Dokumenten durch seine Zeichen-API. Entwickler können PDF-Dokumente manuell konstruieren, indem sie Text, Bilder und Grafiken mit koordinatenbasierten Zeichenbefehlen positionieren.

Installation von IronPDF

UmIronPDFin Ihrem Projekt zu nutzen, können Sie es einfach über den NuGet-Paket-Manager installieren. Folgen Sie diesen Schritten:

1. Öffnen Sie Ihr Projekt in Visual Studio.
2. Gehen Sie zu Tools > NuGet-Paket-Manager > NuGet-Pakete für die Lösung verwalten.
3. Suchen Sie nach IronPdf im NuGet-Manager.
4. Wählen Sie Ihr Projekt aus und klicken Sie dann auf Installieren, umIronPDFzu Ihrem Projekt hinzuzufügen.

Installation vonIronPDFüber die NuGet-Paket-Manager-Oberfläche von Visual Studio

Alternativ können Sie die Paket-Manager-Konsole verwenden, umIronPDFmit dem folgenden Befehl zu installieren:

Install-Package IronPdf

Installation von PDFSharpCore

Um PDFSharpCore mit NuGet zu installieren, befolgen Sie diese Anweisungen:

1. Stellen Sie sicher, dass Ihr Visual Studio-Projekt geöffnet ist.
2. Gehen Sie zu Tools > NuGet-Paket-Manager > NuGet-Pakete für die Lösung verwalten.
3. Suchen Sie im NuGet-Paket-Manager nach PDFSharpCore.
4. Wählen Sie Ihr Projekt aus und klicken Sie auf Installieren, um PDFSharpCore zu integrieren.

Installation von PDFSharpCore über den NuGet-Paket-Manager

Für Entwickler, die die Paket-Manager-Konsole bevorzugen, kann PDFSharpCore mit diesem Befehl installiert werden:

Install-Package PdfSharpCore

IronPDF: Moderner HTML-basierter Ansatz

using IronPdf;
using IronPdf.Rendering;

class Program
{
    static void Main(string[] args)
    {
        // Apply your license key (required for production)
        License.LicenseKey = "Your-License-Key";

        // Create renderer with optimized settings
        var renderer = new ChromePdfRenderer()
        {
            RenderingOptions = new ChromePdfRenderOptions()
            {
                // Set margins for professional appearance
                MarginTop = 25,
                MarginBottom = 25,
                MarginLeft = 20,
                MarginRight = 20,

                // Enable JavaScript execution for dynamic content
                EnableJavaScript = true,

                // Wait for AJAX/animations to complete
                RenderDelay = 500,

                // Set paper orientation and size
                PaperOrientation = PdfPaperOrientation.Portrait,
                PaperSize = PdfPaperSize.A4,

                // Enable printing of background colors and images
                PrintHtmlBackgrounds = true
            }
        };

        // HTML with Bootstrap styling and charts
        string htmlContent = @"
            <!DOCTYPE html>
            <html>
            <head>
                <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css' rel='stylesheet'>
                <script src='https://cdn.jsdelivr.net/npm/chart.js'></script>
                <style>
                    body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
                    .header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 30px; }
                    .chart-container { width: 100%; height: 300px; margin: 20px 0; }
                </style>
            </head>
            <body>
                <div class='header text-center'>
                    <h1>2024 Sales Performance Report</h1>
                    <p class='lead'>Comprehensive Analysis & Insights</p>
                </div>

                <div class='container mt-4'>
                    <div class='row'>
                        <div class='col-md-6'>
                            <div class='card'>
                                <div class='card-body'>
                                    <h5 class='card-title'>Q1 Performance Metrics</h5>
                                    <table class='table table-striped'>
                                        <thead>
                                            <tr>
                                                <th>Month</th>
                                                <th>Revenue</th>
                                                <th>Growth</th>
                                            </tr>
                                        </thead>
                                        <tbody>
                                            <tr>
                                                <td>January</td>
                                                <td>$50,000</td>
                                                <td><span class='badge bg-success'>+12%</span></td>
                                            </tr>
                                            <tr>
                                                <td>February</td>
                                                <td>$55,000</td>
                                                <td><span class='badge bg-success'>+10%</span></td>
                                            </tr>
                                            <tr>
                                                <td>March</td>
                                                <td>$60,000</td>
                                                <td><span class='badge bg-success'>+9%</span></td>
                                            </tr>
                                        </tbody>
                                    </table>
                                </div>
                            </div>
                        </div>
                        <div class='col-md-6'>
                            <div class='card'>
                                <div class='card-body'>
                                    <h5 class='card-title'>Revenue Trend</h5>
                                    <canvas id='revenueChart'></canvas>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class='alert alert-info mt-4'>
                        <strong>Key Insight:</strong> Q1 showed consistent growth across all months, 
                        with total revenue reaching $165,000, representing a 31% increase YoY.
                    </div>
                </div>

                <script>
                    // Create an interactive chart
                    const ctx = document.getElementById('revenueChart').getContext('2d');
                    new Chart(ctx, {
                        type: 'line',
                        data: {
                            labels: ['January', 'February', 'March'],
                            datasets: [{
                                label: 'Revenue',
                                data: [50000, 55000, 60000],
                                borderColor: '#667eea',
                                backgroundColor: 'rgba(102, 126, 234, 0.1)',
                                tension: 0.4
                            }]
                        },
                        options: {
                            responsive: true,
                            maintainAspectRatio: false
                        }
                    });
                </script>
            </body>
            </html>";

        // Render the HTML to PDF
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);

        // Add metadata for better document management
        pdf.MetaData.Author = "Sales Department";
        pdf.MetaData.Title = "Q1 2024 Sales Report";
        pdf.MetaData.Subject = "Quarterly Performance Analysis";
        pdf.MetaData.Keywords = "sales, performance, Q1, 2024";
        pdf.MetaData.CreationDate = DateTime.Now;

        // Save the PDF
        pdf.SaveAs("sales-report-q1-2024.pdf");
        Console.WriteLine("Professional sales report generated successfully!");
    }
}

using IronPdf;
using IronPdf.Rendering;

class Program
{
    static void Main(string[] args)
    {
        // Apply your license key (required for production)
        License.LicenseKey = "Your-License-Key";

        // Create renderer with optimized settings
        var renderer = new ChromePdfRenderer()
        {
            RenderingOptions = new ChromePdfRenderOptions()
            {
                // Set margins for professional appearance
                MarginTop = 25,
                MarginBottom = 25,
                MarginLeft = 20,
                MarginRight = 20,

                // Enable JavaScript execution for dynamic content
                EnableJavaScript = true,

                // Wait for AJAX/animations to complete
                RenderDelay = 500,

                // Set paper orientation and size
                PaperOrientation = PdfPaperOrientation.Portrait,
                PaperSize = PdfPaperSize.A4,

                // Enable printing of background colors and images
                PrintHtmlBackgrounds = true
            }
        };

        // HTML with Bootstrap styling and charts
        string htmlContent = @"
            <!DOCTYPE html>
            <html>
            <head>
                <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css' rel='stylesheet'>
                <script src='https://cdn.jsdelivr.net/npm/chart.js'></script>
                <style>
                    body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
                    .header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 30px; }
                    .chart-container { width: 100%; height: 300px; margin: 20px 0; }
                </style>
            </head>
            <body>
                <div class='header text-center'>
                    <h1>2024 Sales Performance Report</h1>
                    <p class='lead'>Comprehensive Analysis & Insights</p>
                </div>

                <div class='container mt-4'>
                    <div class='row'>
                        <div class='col-md-6'>
                            <div class='card'>
                                <div class='card-body'>
                                    <h5 class='card-title'>Q1 Performance Metrics</h5>
                                    <table class='table table-striped'>
                                        <thead>
                                            <tr>
                                                <th>Month</th>
                                                <th>Revenue</th>
                                                <th>Growth</th>
                                            </tr>
                                        </thead>
                                        <tbody>
                                            <tr>
                                                <td>January</td>
                                                <td>$50,000</td>
                                                <td><span class='badge bg-success'>+12%</span></td>
                                            </tr>
                                            <tr>
                                                <td>February</td>
                                                <td>$55,000</td>
                                                <td><span class='badge bg-success'>+10%</span></td>
                                            </tr>
                                            <tr>
                                                <td>March</td>
                                                <td>$60,000</td>
                                                <td><span class='badge bg-success'>+9%</span></td>
                                            </tr>
                                        </tbody>
                                    </table>
                                </div>
                            </div>
                        </div>
                        <div class='col-md-6'>
                            <div class='card'>
                                <div class='card-body'>
                                    <h5 class='card-title'>Revenue Trend</h5>
                                    <canvas id='revenueChart'></canvas>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class='alert alert-info mt-4'>
                        <strong>Key Insight:</strong> Q1 showed consistent growth across all months, 
                        with total revenue reaching $165,000, representing a 31% increase YoY.
                    </div>
                </div>

                <script>
                    // Create an interactive chart
                    const ctx = document.getElementById('revenueChart').getContext('2d');
                    new Chart(ctx, {
                        type: 'line',
                        data: {
                            labels: ['January', 'February', 'March'],
                            datasets: [{
                                label: 'Revenue',
                                data: [50000, 55000, 60000],
                                borderColor: '#667eea',
                                backgroundColor: 'rgba(102, 126, 234, 0.1)',
                                tension: 0.4
                            }]
                        },
                        options: {
                            responsive: true,
                            maintainAspectRatio: false
                        }
                    });
                </script>
            </body>
            </html>";

        // Render the HTML to PDF
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);

        // Add metadata for better document management
        pdf.MetaData.Author = "Sales Department";
        pdf.MetaData.Title = "Q1 2024 Sales Report";
        pdf.MetaData.Subject = "Quarterly Performance Analysis";
        pdf.MetaData.Keywords = "sales, performance, Q1, 2024";
        pdf.MetaData.CreationDate = DateTime.Now;

        // Save the PDF
        pdf.SaveAs("sales-report-q1-2024.pdf");
        Console.WriteLine("Professional sales report generated successfully!");
    }
}

using IronPdf;

class Program
{
    static async Task Main(string[] args)
    {
        License.LicenseKey = "Your-License-Key";

        var renderer = new ChromePdfRenderer();

        // Convert a local HTML file with external resources
        var filePdf = renderer.RenderHtmlFileAsPdf(@"C:\Reports\template.html");
        filePdf.SaveAs("from-file.pdf");

        // Convert a URL with authentication
        renderer.LoginCredentials = new ChromeHttpLoginCredentials()
        {
            Username = "user@example.com",
            Password = "secure-password"
        };

        // Render a password-protected page
        var urlPdf = await renderer.RenderUrlAsPdfAsync("https://secure.example.com/reports");
        urlPdf.SaveAs("secure-report.pdf");
    }
}

using IronPdf;

class Program
{
    static async Task Main(string[] args)
    {
        License.LicenseKey = "Your-License-Key";

        var renderer = new ChromePdfRenderer();

        // Convert a local HTML file with external resources
        var filePdf = renderer.RenderHtmlFileAsPdf(@"C:\Reports\template.html");
        filePdf.SaveAs("from-file.pdf");

        // Convert a URL with authentication
        renderer.LoginCredentials = new ChromeHttpLoginCredentials()
        {
            Username = "user@example.com",
            Password = "secure-password"
        };

        // Render a password-protected page
        var urlPdf = await renderer.RenderUrlAsPdfAsync("https://secure.example.com/reports");
        urlPdf.SaveAs("secure-report.pdf");
    }
}

PDFSharpCore: Manueller Dokumentenaufbau

PDFSharpCore verfolgt einen grundsätzlich anderen Ansatz, bei dem Entwickler PDF-Dokumente manuell mit Zeichenbefehlen erstellen müssen. Obwohl dies präzise Kontrolle bietet, erfordert es erheblich mehr Code für komplexe Layouts.

using PdfSharpCore.Drawing;
using PdfSharpCore.Pdf;
using System;

class Program
{
    static void Main()
    {
        // Create a new PDF document
        var document = new PdfDocument();
        document.Info.Title = "Sales Report Q1 2024";
        document.Info.Author = "Sales Department";

        // Add a page
        var page = document.AddPage();
        page.Size = PdfSharpCore.PageSize.A4;

        // Create graphics object for drawing
        var gfx = XGraphics.FromPdfPage(page);

        // Define fonts
        var titleFont = new XFont("Arial", 24, XFontStyle.Bold);
        var headingFont = new XFont("Arial", 14, XFontStyle.Bold);
        var normalFont = new XFont("Arial", 11, XFontStyle.Regular);

        // Draw title with gradient-like effect (manual implementation)
        var titleBrush = new XLinearGradientBrush(
            new XPoint(0, 0), 
            new XPoint(page.Width, 0),
            XColors.DarkBlue, 
            XColors.Purple
        );
        gfx.DrawRectangle(titleBrush, 0, 0, page.Width, 80);
        gfx.DrawString("2024 Sales Performance Report", 
            titleFont, XBrushes.White,
            new XRect(0, 20, page.Width, 40),
            XStringFormats.TopCenter);

        // Draw table manually
        double yPosition = 120;
        double margin = 50;
        double columnWidth = (page.Width - 2 * margin) / 3;

        // Table header
        gfx.DrawRectangle(XBrushes.LightGray, margin, yPosition, page.Width - 2 * margin, 25);
        gfx.DrawString("Month", headingFont, XBrushes.Black, 
            new XRect(margin, yPosition, columnWidth, 25), 
            XStringFormats.Center);
        gfx.DrawString("Revenue", headingFont, XBrushes.Black, 
            new XRect(margin + columnWidth, yPosition, columnWidth, 25), 
            XStringFormats.Center);
        gfx.DrawString("Growth", headingFont, XBrushes.Black, 
            new XRect(margin + 2 * columnWidth, yPosition, columnWidth, 25), 
            XStringFormats.Center);

        // Table data
        string[,] data = {
            { "January", "$50,000", "+12%" },
            { "February", "$55,000", "+10%" },
            { "March", "$60,000", "+9%" }
        };

        yPosition += 25;
        for (int i = 0; i < 3; i++)
        {
            // Alternate row colors
            if (i % 2 == 0)
            {
                gfx.DrawRectangle(XBrushes.WhiteSmoke, margin, yPosition, page.Width - 2 * margin, 20);
            }

            for (int j = 0; j < 3; j++)
            {
                gfx.DrawString(data[i, j], normalFont, XBrushes.Black,
                    new XRect(margin + j * columnWidth, yPosition, columnWidth, 20),
                    XStringFormats.Center);
            }
            yPosition += 20;
        }

        // Draw a simple line chart (very basic implementation)
        yPosition += 40;
        gfx.DrawString("Revenue Trend", headingFont, XBrushes.Black,
            new XRect(margin, yPosition, page.Width - 2 * margin, 25),
            XStringFormats.TopLeft);

        // Chart area
        yPosition += 30;
        double chartHeight = 150;
        double chartWidth = page.Width - 2 * margin;

        // Draw axes
        gfx.DrawLine(XPens.Black, margin, yPosition + chartHeight, margin + chartWidth, yPosition + chartHeight);
        gfx.DrawLine(XPens.Black, margin, yPosition, margin, yPosition + chartHeight);

        // Plot points (simplified)
        double[] revenues = { 50000, 55000, 60000 };
        double maxRevenue = 65000;
        double xStep = chartWidth / 3;

        for (int i = 0; i < revenues.Length; i++)
        {
            double x = margin + (i + 0.5) * xStep;
            double y = yPosition + chartHeight - (revenues[i] / maxRevenue * chartHeight);

            // Draw point
            gfx.DrawEllipse(XBrushes.Blue, x - 3, y - 3, 6, 6);

            // Draw connecting lines
            if (i > 0)
            {
                double prevX = margin + (i - 0.5) * xStep;
                double prevY = yPosition + chartHeight - (revenues[i - 1] / maxRevenue * chartHeight);
                gfx.DrawLine(new XPen(XColors.Blue, 2), prevX, prevY, x, y);
            }

            // Labels
            gfx.DrawString($"${revenues[i]:N0}", normalFont, XBrushes.Black,
                new XRect(x - 30, y - 20, 60, 15),
                XStringFormats.TopCenter);
        }

        // Save the document
        document.Save("pdfsharp-sales-report.pdf");
        Console.WriteLine("PDF created with PDFSharpCore");
    }
}

using PdfSharpCore.Drawing;
using PdfSharpCore.Pdf;
using System;

class Program
{
    static void Main()
    {
        // Create a new PDF document
        var document = new PdfDocument();
        document.Info.Title = "Sales Report Q1 2024";
        document.Info.Author = "Sales Department";

        // Add a page
        var page = document.AddPage();
        page.Size = PdfSharpCore.PageSize.A4;

        // Create graphics object for drawing
        var gfx = XGraphics.FromPdfPage(page);

        // Define fonts
        var titleFont = new XFont("Arial", 24, XFontStyle.Bold);
        var headingFont = new XFont("Arial", 14, XFontStyle.Bold);
        var normalFont = new XFont("Arial", 11, XFontStyle.Regular);

        // Draw title with gradient-like effect (manual implementation)
        var titleBrush = new XLinearGradientBrush(
            new XPoint(0, 0), 
            new XPoint(page.Width, 0),
            XColors.DarkBlue, 
            XColors.Purple
        );
        gfx.DrawRectangle(titleBrush, 0, 0, page.Width, 80);
        gfx.DrawString("2024 Sales Performance Report", 
            titleFont, XBrushes.White,
            new XRect(0, 20, page.Width, 40),
            XStringFormats.TopCenter);

        // Draw table manually
        double yPosition = 120;
        double margin = 50;
        double columnWidth = (page.Width - 2 * margin) / 3;

        // Table header
        gfx.DrawRectangle(XBrushes.LightGray, margin, yPosition, page.Width - 2 * margin, 25);
        gfx.DrawString("Month", headingFont, XBrushes.Black, 
            new XRect(margin, yPosition, columnWidth, 25), 
            XStringFormats.Center);
        gfx.DrawString("Revenue", headingFont, XBrushes.Black, 
            new XRect(margin + columnWidth, yPosition, columnWidth, 25), 
            XStringFormats.Center);
        gfx.DrawString("Growth", headingFont, XBrushes.Black, 
            new XRect(margin + 2 * columnWidth, yPosition, columnWidth, 25), 
            XStringFormats.Center);

        // Table data
        string[,] data = {
            { "January", "$50,000", "+12%" },
            { "February", "$55,000", "+10%" },
            { "March", "$60,000", "+9%" }
        };

        yPosition += 25;
        for (int i = 0; i < 3; i++)
        {
            // Alternate row colors
            if (i % 2 == 0)
            {
                gfx.DrawRectangle(XBrushes.WhiteSmoke, margin, yPosition, page.Width - 2 * margin, 20);
            }

            for (int j = 0; j < 3; j++)
            {
                gfx.DrawString(data[i, j], normalFont, XBrushes.Black,
                    new XRect(margin + j * columnWidth, yPosition, columnWidth, 20),
                    XStringFormats.Center);
            }
            yPosition += 20;
        }

        // Draw a simple line chart (very basic implementation)
        yPosition += 40;
        gfx.DrawString("Revenue Trend", headingFont, XBrushes.Black,
            new XRect(margin, yPosition, page.Width - 2 * margin, 25),
            XStringFormats.TopLeft);

        // Chart area
        yPosition += 30;
        double chartHeight = 150;
        double chartWidth = page.Width - 2 * margin;

        // Draw axes
        gfx.DrawLine(XPens.Black, margin, yPosition + chartHeight, margin + chartWidth, yPosition + chartHeight);
        gfx.DrawLine(XPens.Black, margin, yPosition, margin, yPosition + chartHeight);

        // Plot points (simplified)
        double[] revenues = { 50000, 55000, 60000 };
        double maxRevenue = 65000;
        double xStep = chartWidth / 3;

        for (int i = 0; i < revenues.Length; i++)
        {
            double x = margin + (i + 0.5) * xStep;
            double y = yPosition + chartHeight - (revenues[i] / maxRevenue * chartHeight);

            // Draw point
            gfx.DrawEllipse(XBrushes.Blue, x - 3, y - 3, 6, 6);

            // Draw connecting lines
            if (i > 0)
            {
                double prevX = margin + (i - 0.5) * xStep;
                double prevY = yPosition + chartHeight - (revenues[i - 1] / maxRevenue * chartHeight);
                gfx.DrawLine(new XPen(XColors.Blue, 2), prevX, prevY, x, y);
            }

            // Labels
            gfx.DrawString($"${revenues[i]:N0}", normalFont, XBrushes.Black,
                new XRect(x - 30, y - 20, 60, 15),
                XStringFormats.TopCenter);
        }

        // Save the document
        document.Save("pdfsharp-sales-report.pdf");
        Console.WriteLine("PDF created with PDFSharpCore");
    }
}

Wie Sie sehen können, erfordert die Erstellung eines sogar moderat komplexen Dokuments mit PDFSharpCore:

• Manuelle Positionierung jedes Elements
• Komplexe Berechnungen für Layouts
• Keine integrierte Unterstützung für HTML oder CSS
• Manuelle Umsetzung von Diagrammen und Grafiken
• Erheblich mehr Code für das gleiche Ergebnis

HTML zu PDF mit PDFSharpCore

Da PDFSharpCore keine native HTML-zu-PDF-Konvertierung unterstützt, müssen Entwickler Drittanbieterbibliotheken verwenden. Eine beliebte Wahl ist die Kombination von PDFSharpCore mit HtmlRenderer:

using PdfSharpCore.Pdf;
using TheArtOfDev.HtmlRenderer.PdfSharp;

var document = new PdfDocument();
string htmlContent = File.ReadAllText("template.html");

// Note: HtmlRenderer has limited CSS support
PdfGenerator.AddPdfPages(document, htmlContent, PdfSharpCore.PageSize.A4);
document.Save("from-html.pdf");

using PdfSharpCore.Pdf;
using TheArtOfDev.HtmlRenderer.PdfSharp;

var document = new PdfDocument();
string htmlContent = File.ReadAllText("template.html");

// Note: HtmlRenderer has limited CSS support
PdfGenerator.AddPdfPages(document, htmlContent, PdfSharpCore.PageSize.A4);
document.Save("from-html.pdf");

Dieser Ansatz hat jedoch wesentliche Einschränkungen:

• Begrenzte CSS3-Unterstützung (ca. 70-80% Kompatibilität)
• Keine JavaScript-Ausführung
• Schlechte Handhabung moderner Web-Features
• Inkonsistente Renderqualität im Vergleich zu Browsern

IronPDF: Vollständige Unterstützung von Bootstrap und CSS Framework

• Bootstrap 5: Vollständige Flexbox-Layout-Engine, CSS Grid, Hilfsklassen und alle Komponentensysteme
• Bootstrap 4: Vollständige Kartenkomponenten, Navigation, Flexbox-Funktionen und responsive Klassen Tailwind CSS: Alle Utility-Klassen mit korrekter Darstellung
• Foundation: Vollständiges Grid-System und Komponentenbibliothek
• Modernes CSS3: Flexbox, CSS Grid, benutzerdefinierte Eigenschaften, Animationen, Übergänge und Transformationen

Echte Beweise:IronPDFrendert die Bootstrap-Startseite und alle offiziellen Vorlagen mit pixelgenauer Genauigkeit.

Codebeispiel: Projektfortschritts-Dashboard

using IronPdf;

// Set yourIronPDFlicense key
IronPdf.License.LicenseKey = "License-Key goes here";

var renderer = new ChromePdfRenderer();
string bootstrapProgress = @"
<!DOCTYPE html>
<html>
<head>
    <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css' rel='stylesheet'>
    <style>
        .project-card {
            transition: all 0.3s ease;
            border-left: 4px solid transparent;
        }
        .project-card.active { border-left-color: #0d6efd; }
        .progress-label { font-size: 0.75rem; font-weight: 600; }
    </style>
</head>
<body>
    <div class='container my-5'>
        <div class='d-flex justify-content-between align-items-center mb-4'>
            <div>
                <h1 class='display-6 mb-1'>Project Portfolio Status</h1>
                <p class='text-muted mb-0'>Q1 2025 Development Pipeline</p>
            </div>
            <div>
                <span class='badge bg-success fs-6'>8 Active Projects</span>
            </div>
        </div>

        <div class='row g-4 mb-4'>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-primary mb-2'>72%</div>
                        <h6 class='text-muted text-uppercase mb-0'>Overall Progress</h6>
                    </div>
                </div>
            </div>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-success mb-2'>5</div>
                        <h6 class='text-muted text-uppercase mb-0'>On Track</h6>
                    </div>
                </div>
            </div>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-warning mb-2'>2</div>
                        <h6 class='text-muted text-uppercase mb-0'>At Risk</h6>
                    </div>
                </div>
            </div>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-danger mb-2'>1</div>
                        <h6 class='text-muted text-uppercase mb-0'>Delayed</h6>
                    </div>
                </div>
            </div>
        </div>

        <div class='card shadow-sm mb-4'>
            <div class='card-header bg-primary text-white'>
                <h5 class='mb-0'>Active Projects</h5>
            </div>
            <div class='card-body p-0'>
                <div class='list-group list-group-flush'>
                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>E-Commerce Platform Redesign</h6>
                                <small class='text-muted'>Lead: Sarah Chen | Due: Apr 15, 2025</small>
                            </div>
                            <span class='badge bg-success'>On Track</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-primary'>85%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-primary' role='progressbar' style='width: 85%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>Frontend: 90%</span>
                            <span class='badge bg-light text-dark'>Backend: 80%</span>
                            <span class='badge bg-light text-dark'>Testing: 85%</span>
                        </div>
                    </div>

                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>Mobile App Integration</h6>
                                <small class='text-muted'>Lead: Marcus Johnson | Due: Mar 30, 2025</small>
                            </div>
                            <span class='badge bg-success'>On Track</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-success'>92%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-success' role='progressbar' style='width: 92%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>iOS: 95%</span>
                            <span class='badge bg-light text-dark'>Android: 90%</span>
                            <span class='badge bg-light text-dark'>API: 100%</span>
                        </div>
                    </div>

                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>Customer Analytics Dashboard</h6>
                                <small class='text-muted'>Lead: Emily Rodriguez | Due: Apr 22, 2025</small>
                            </div>
                            <span class='badge bg-warning text-dark'>At Risk</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-warning'>58%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-warning' role='progressbar' style='width: 58%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>Data Pipeline: 65%</span>
                            <span class='badge bg-light text-dark'>UI: 50%</span>
                            <span class='badge bg-light text-dark'>Reports: 45%</span>
                        </div>
                        <div class='alert alert-warning mt-2 mb-0 py-2'>
                            <small><strong>Issue:</strong> Resource constraints affecting timeline. Review scheduled for next week.</small>
                        </div>
                    </div>

                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>Security Infrastructure Upgrade</h6>
                                <small class='text-muted'>Lead: David Kim | Due: Mar 25, 2025</small>
                            </div>
                            <span class='badge bg-danger'>Delayed</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-danger'>42%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-danger' role='progressbar' style='width: 42%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>Authentication: 60%</span>
                            <span class='badge bg-light text-dark'>Verschlüsselung: 40%</span>
                            <span class='badge bg-light text-dark'>Audit Logs: 25%</span>
                        </div>
                        <div class='alert alert-danger mt-2 mb-0 py-2'>
                            <small><strong>Critical:</strong> 7 days behind schedule. Additional resources allocated. Daily standup required.</small>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class='row g-4'>
            <div class='col-md-6'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Sprint Velocity</h5>
                    </div>
                    <div class='card-body'>
                        <div class='mb-3'>
                            <div class='d-flex justify-content-between mb-1'>
                                <span class='text-muted'>Current Sprint</span>
                                <strong>42 Story Points</strong>
                            </div>
                            <div class='progress' style='height: 20px;'>
                                <div class='progress-bar bg-success' style='width: 84%'>84% Complete</div>
                            </div>
                        </div>
                        <div class='mb-3'>
                            <div class='d-flex justify-content-between mb-1'>
                                <span class='text-muted'>Previous Sprint</span>
                                <strong>38 Story Points</strong>
                            </div>
                            <div class='progress' style='height: 20px;'>
                                <div class='progress-bar bg-info' style='width: 100%'>Completed</div>
                            </div>
                        </div>
                        <div class='mb-0'>
                            <div class='d-flex justify-content-between mb-1'>
                                <span class='text-muted'>Average Velocity</span>
                                <strong>40 Story Points</strong>
                            </div>
                            <div class='progress' style='height: 20px;'>
                                <div class='progress-bar bg-primary' style='width: 100%'>Baseline</div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-6'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Team Capacity</h5>
                    </div>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-3'>
                            <div>
                                <h6 class='mb-0'>Frontend Team</h6>
                                <small class='text-muted'>6 developers</small>
                            </div>
                            <span class='badge bg-success'>92% Utilized</span>
                        </div>
                        <div class='d-flex justify-content-between align-items-center mb-3'>
                            <div>
                                <h6 class='mb-0'>Backend Team</h6>
                                <small class='text-muted'>5 developers</small>
                            </div>
                            <span class='badge bg-success'>88% Utilized</span>
                        </div>
                        <div class='d-flex justify-content-between align-items-center mb-3'>
                            <div>
                                <h6 class='mb-0'>QA Team</h6>
                                <small class='text-muted'>3 testers</small>
                            </div>
                            <span class='badge bg-warning text-dark'>105% Utilized</span>
                        </div>
                        <div class='d-flex justify-content-between align-items-center mb-0'>
                            <div>
                                <h6 class='mb-0'>DevOps Team</h6>
                                <small class='text-muted'>2 engineers</small>
                            </div>
                            <span class='badge bg-danger'>110% Utilized</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>";

var pdf = renderer.RenderHtmlAsPdf(bootstrapProgress);
pdf.SaveAs("project-progress.pdf");

using IronPdf;

// Set yourIronPDFlicense key
IronPdf.License.LicenseKey = "License-Key goes here";

var renderer = new ChromePdfRenderer();
string bootstrapProgress = @"
<!DOCTYPE html>
<html>
<head>
    <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css' rel='stylesheet'>
    <style>
        .project-card {
            transition: all 0.3s ease;
            border-left: 4px solid transparent;
        }
        .project-card.active { border-left-color: #0d6efd; }
        .progress-label { font-size: 0.75rem; font-weight: 600; }
    </style>
</head>
<body>
    <div class='container my-5'>
        <div class='d-flex justify-content-between align-items-center mb-4'>
            <div>
                <h1 class='display-6 mb-1'>Project Portfolio Status</h1>
                <p class='text-muted mb-0'>Q1 2025 Development Pipeline</p>
            </div>
            <div>
                <span class='badge bg-success fs-6'>8 Active Projects</span>
            </div>
        </div>

        <div class='row g-4 mb-4'>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-primary mb-2'>72%</div>
                        <h6 class='text-muted text-uppercase mb-0'>Overall Progress</h6>
                    </div>
                </div>
            </div>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-success mb-2'>5</div>
                        <h6 class='text-muted text-uppercase mb-0'>On Track</h6>
                    </div>
                </div>
            </div>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-warning mb-2'>2</div>
                        <h6 class='text-muted text-uppercase mb-0'>At Risk</h6>
                    </div>
                </div>
            </div>
            <div class='col-md-3'>
                <div class='card text-center shadow-sm'>
                    <div class='card-body'>
                        <div class='display-4 text-danger mb-2'>1</div>
                        <h6 class='text-muted text-uppercase mb-0'>Delayed</h6>
                    </div>
                </div>
            </div>
        </div>

        <div class='card shadow-sm mb-4'>
            <div class='card-header bg-primary text-white'>
                <h5 class='mb-0'>Active Projects</h5>
            </div>
            <div class='card-body p-0'>
                <div class='list-group list-group-flush'>
                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>E-Commerce Platform Redesign</h6>
                                <small class='text-muted'>Lead: Sarah Chen | Due: Apr 15, 2025</small>
                            </div>
                            <span class='badge bg-success'>On Track</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-primary'>85%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-primary' role='progressbar' style='width: 85%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>Frontend: 90%</span>
                            <span class='badge bg-light text-dark'>Backend: 80%</span>
                            <span class='badge bg-light text-dark'>Testing: 85%</span>
                        </div>
                    </div>

                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>Mobile App Integration</h6>
                                <small class='text-muted'>Lead: Marcus Johnson | Due: Mar 30, 2025</small>
                            </div>
                            <span class='badge bg-success'>On Track</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-success'>92%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-success' role='progressbar' style='width: 92%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>iOS: 95%</span>
                            <span class='badge bg-light text-dark'>Android: 90%</span>
                            <span class='badge bg-light text-dark'>API: 100%</span>
                        </div>
                    </div>

                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>Customer Analytics Dashboard</h6>
                                <small class='text-muted'>Lead: Emily Rodriguez | Due: Apr 22, 2025</small>
                            </div>
                            <span class='badge bg-warning text-dark'>At Risk</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-warning'>58%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-warning' role='progressbar' style='width: 58%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>Data Pipeline: 65%</span>
                            <span class='badge bg-light text-dark'>UI: 50%</span>
                            <span class='badge bg-light text-dark'>Reports: 45%</span>
                        </div>
                        <div class='alert alert-warning mt-2 mb-0 py-2'>
                            <small><strong>Issue:</strong> Resource constraints affecting timeline. Review scheduled for next week.</small>
                        </div>
                    </div>

                    <div class='list-group-item'>
                        <div class='d-flex justify-content-between align-items-start mb-3'>
                            <div>
                                <h6 class='mb-1'>Security Infrastructure Upgrade</h6>
                                <small class='text-muted'>Lead: David Kim | Due: Mar 25, 2025</small>
                            </div>
                            <span class='badge bg-danger'>Delayed</span>
                        </div>
                        <div class='mb-2'>
                            <div class='d-flex justify-content-between align-items-center mb-1'>
                                <span class='progress-label text-muted'>COMPLETION</span>
                                <span class='progress-label text-danger'>42%</span>
                            </div>
                            <div class='progress' style='height: 8px;'>
                                <div class='progress-bar bg-danger' role='progressbar' style='width: 42%'></div>
                            </div>
                        </div>
                        <div class='d-flex gap-2 flex-wrap'>
                            <span class='badge bg-light text-dark'>Authentication: 60%</span>
                            <span class='badge bg-light text-dark'>Verschlüsselung: 40%</span>
                            <span class='badge bg-light text-dark'>Audit Logs: 25%</span>
                        </div>
                        <div class='alert alert-danger mt-2 mb-0 py-2'>
                            <small><strong>Critical:</strong> 7 days behind schedule. Additional resources allocated. Daily standup required.</small>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class='row g-4'>
            <div class='col-md-6'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Sprint Velocity</h5>
                    </div>
                    <div class='card-body'>
                        <div class='mb-3'>
                            <div class='d-flex justify-content-between mb-1'>
                                <span class='text-muted'>Current Sprint</span>
                                <strong>42 Story Points</strong>
                            </div>
                            <div class='progress' style='height: 20px;'>
                                <div class='progress-bar bg-success' style='width: 84%'>84% Complete</div>
                            </div>
                        </div>
                        <div class='mb-3'>
                            <div class='d-flex justify-content-between mb-1'>
                                <span class='text-muted'>Previous Sprint</span>
                                <strong>38 Story Points</strong>
                            </div>
                            <div class='progress' style='height: 20px;'>
                                <div class='progress-bar bg-info' style='width: 100%'>Completed</div>
                            </div>
                        </div>
                        <div class='mb-0'>
                            <div class='d-flex justify-content-between mb-1'>
                                <span class='text-muted'>Average Velocity</span>
                                <strong>40 Story Points</strong>
                            </div>
                            <div class='progress' style='height: 20px;'>
                                <div class='progress-bar bg-primary' style='width: 100%'>Baseline</div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-6'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Team Capacity</h5>
                    </div>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-3'>
                            <div>
                                <h6 class='mb-0'>Frontend Team</h6>
                                <small class='text-muted'>6 developers</small>
                            </div>
                            <span class='badge bg-success'>92% Utilized</span>
                        </div>
                        <div class='d-flex justify-content-between align-items-center mb-3'>
                            <div>
                                <h6 class='mb-0'>Backend Team</h6>
                                <small class='text-muted'>5 developers</small>
                            </div>
                            <span class='badge bg-success'>88% Utilized</span>
                        </div>
                        <div class='d-flex justify-content-between align-items-center mb-3'>
                            <div>
                                <h6 class='mb-0'>QA Team</h6>
                                <small class='text-muted'>3 testers</small>
                            </div>
                            <span class='badge bg-warning text-dark'>105% Utilized</span>
                        </div>
                        <div class='d-flex justify-content-between align-items-center mb-0'>
                            <div>
                                <h6 class='mb-0'>DevOps Team</h6>
                                <small class='text-muted'>2 engineers</small>
                            </div>
                            <span class='badge bg-danger'>110% Utilized</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>";

var pdf = renderer.RenderHtmlAsPdf(bootstrapProgress);
pdf.SaveAs("project-progress.pdf");

Ergebnis: Professionelles Projektmanagement-PDF mit Bootstrap 5-basierten Flexbox-Layouts, Fortschrittsbalken-Komponenten, Badge-Funktionen, responsiven Kartensystemen und Benachrichtigungskomponenten – alles perfekt ausgerichtet, mit exakten Abständen und präziser Farbwiedergabe.

PDFSharpCore: Keine native HTML-Unterstützung

PDFSharpCore hat keine native HTML-Rendering-Engine. Die Bibliothek ist ausschließlich für niedrige PDF-Manipulationen und Zeichenoperationen ausgelegt:

• Keine Bootstrap-Unterstützung: HTML/CSS-Frameworks können überhaupt nicht verarbeitet werden.
• Kein Flexbox oder CSS Grid: Überhaupt keine CSS-Rendering-Funktionen
• Nur manuelle Konstruktion: Erfordert das Zeichnen von Text, Formen und Bildern mithilfe koordinatenbasierter APIs
• Externe Tools erforderlich: Es müssen HTML-Renderer oder Konvertierungsdienste von Drittanbietern verwendet werden.

Die HtmlRenderer-Integration (Drittanbieter) bietet nur grundlegende HTML-Unterstützung mit schwerwiegenden Einschränkungen – etwa 70-80% CSS3-Kompatibilität, kein Flexbox, kein CSS-Grid und keine Unterstützung moderner Frameworks.

Auswirkungen auf die Entwicklung: Die Teams müssen entweder vollständig auf HTML-basierte Arbeitsabläufe verzichten oder mehrere Tools integrieren (PDFSharpCore + externer HTML-Renderer), was die Komplexität erhöht, den Wartungsaufwand steigert und zu potenziellen Kompatibilitätsproblemen zwischen den Bibliotheksversionen führt.

Für detaillierte Informationen über die Kompatibilität des Bootstrap-Frameworks und die CSS3-Rendering-Fähigkeiten, siehe den Bootstrap & Flexbox CSS Guide.

Textextraktion

using IronPdf;

// Extract all text from a PDF
var pdf = PdfDocument.FromFile("report.pdf");
string allText = pdf.ExtractAllText();

// Extract text from specific pages
for (int i = 0; i < pdf.PageCount; i++)
{
    string pageText = pdf.ExtractTextFromPage(i);
    Console.WriteLine($"Page {i + 1}: {pageText.Substring(0, Math.Min(100, pageText.Length))}...");
}

// Extract text from a specific region
var pageIndex = 0;
var region = new Rectangle(50, 50, 200, 100); // x, y, width, height
string regionText = pdf.ExtractTextFromPage(pageIndex, region);

using IronPdf;

// Extract all text from a PDF
var pdf = PdfDocument.FromFile("report.pdf");
string allText = pdf.ExtractAllText();

// Extract text from specific pages
for (int i = 0; i < pdf.PageCount; i++)
{
    string pageText = pdf.ExtractTextFromPage(i);
    Console.WriteLine($"Page {i + 1}: {pageText.Substring(0, Math.Min(100, pageText.Length))}...");
}

// Extract text from a specific region
var pageIndex = 0;
var region = new Rectangle(50, 50, 200, 100); // x, y, width, height
string regionText = pdf.ExtractTextFromPage(pageIndex, region);

// PDFSharpCore doesn't have reliable text extraction
// This is a significant limitation for many use cases

// PDFSharpCore doesn't have reliable text extraction
// This is a significant limitation for many use cases

Wasserzeichen

using IronPdf;

var pdf = PdfDocument.FromFile("document.pdf");

// HTML-based watermark with full CSS support
string watermarkHtml = @"
    <div style='
        font-size: 48px;
        color: rgba(255, 0, 0, 0.3);
        transform: rotate(-45deg);
        text-align: center;
        font-weight: bold;
    '>
        CONFIDENTIAL
    </div>";

pdf.ApplyWatermark(watermarkHtml, 50, VerticalAlignment.Middle, HorizontalAlignment.Center);

// Image watermark
pdf.ApplyWatermark("logo.png", 30, VerticalAlignment.Bottom, HorizontalAlignment.Right);

pdf.SaveAs("watermarked.pdf");

using IronPdf;

var pdf = PdfDocument.FromFile("document.pdf");

// HTML-based watermark with full CSS support
string watermarkHtml = @"
    <div style='
        font-size: 48px;
        color: rgba(255, 0, 0, 0.3);
        transform: rotate(-45deg);
        text-align: center;
        font-weight: bold;
    '>
        CONFIDENTIAL
    </div>";

pdf.ApplyWatermark(watermarkHtml, 50, VerticalAlignment.Middle, HorizontalAlignment.Center);

// Image watermark
pdf.ApplyWatermark("logo.png", 30, VerticalAlignment.Bottom, HorizontalAlignment.Right);

pdf.SaveAs("watermarked.pdf");

using PdfSharpCore.Drawing;
using PdfSharpCore.Pdf;
using PdfSharpCore.Pdf.IO;

var document = PdfReader.Open("document.pdf", PdfDocumentOpenMode.Modify);

foreach (var page in document.Pages)
{
    var gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Append);

    // Create watermark font
    var font = new XFont("Arial", 48);

    // Calculate rotation
    gfx.TranslateTransform(page.Width / 2, page.Height / 2);
    gfx.RotateTransform(-45);

    // Draw watermark
    var size = gfx.MeasureString("CONFIDENTIAL", font);
    gfx.DrawString("CONFIDENTIAL", font, 
        new XSolidBrush(XColor.FromArgb(128, 255, 0, 0)),
        new XRect(-size.Width / 2, -size.Height / 2, size.Width, size.Height),
        XStringFormats.Center);
}

document.Save("watermarked-pdfsharp.pdf");

using PdfSharpCore.Drawing;
using PdfSharpCore.Pdf;
using PdfSharpCore.Pdf.IO;

var document = PdfReader.Open("document.pdf", PdfDocumentOpenMode.Modify);

foreach (var page in document.Pages)
{
    var gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Append);

    // Create watermark font
    var font = new XFont("Arial", 48);

    // Calculate rotation
    gfx.TranslateTransform(page.Width / 2, page.Height / 2);
    gfx.RotateTransform(-45);

    // Draw watermark
    var size = gfx.MeasureString("CONFIDENTIAL", font);
    gfx.DrawString("CONFIDENTIAL", font, 
        new XSolidBrush(XColor.FromArgb(128, 255, 0, 0)),
        new XRect(-size.Width / 2, -size.Height / 2, size.Width, size.Height),
        XStringFormats.Center);
}

document.Save("watermarked-pdfsharp.pdf");

Digitale Signaturen

using IronPdf;
using IronPdf.Signing;

var pdf = PdfDocument.FromFile("contract.pdf");

// Create a signature with certificate
var signature = new PdfSignature("certificate.pfx", "password")
{
    SigningContact = "legal@company.com",
    SigningLocation = "New York, NY",
    SigningReason = "Contract Approval"
};

// Add visual signature
var signatureImage = new PdfSignature("certificate.pfx", "password")
{
    SignatureImage = new PdfSignatureImage("signature.png", 0, 0, 200, 100)
};

// Apply signature to the last page
pdf.Sign(signature);
pdf.SaveAs("signed-contract.pdf");

using IronPdf;
using IronPdf.Signing;

var pdf = PdfDocument.FromFile("contract.pdf");

// Create a signature with certificate
var signature = new PdfSignature("certificate.pfx", "password")
{
    SigningContact = "legal@company.com",
    SigningLocation = "New York, NY",
    SigningReason = "Contract Approval"
};

// Add visual signature
var signatureImage = new PdfSignature("certificate.pfx", "password")
{
    SignatureImage = new PdfSignatureImage("signature.png", 0, 0, 200, 100)
};

// Apply signature to the last page
pdf.Sign(signature);
pdf.SaveAs("signed-contract.pdf");

Formularbearbeitung

using IronPdf;

// Create a form from HTML
var html = @"
    <form>
        <label>Name: <input type='text' name='fullName' required></label><br>
        <label>Email: <input type='email' name='email' required></label><br>
        <label>Subscribe: <input type='checkbox' name='subscribe' value='yes'></label><br>
        <label>
            Plan:
            <select name='plan'>
                <option value='basic'>Basic</option>
                <option value='pro'>Professional</option>
                <option value='enterprise'>Enterprise</option>
            </select>
        </label>
    </form>";

var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(html);

// Fill existing form
var filledPdf = PdfDocument.FromFile("application-form.pdf");
filledPdf.Form.FindFormField("fullName").Value = "John Doe";
filledPdf.Form.FindFormField("email").Value = "john@example.com";
filledPdf.Form.FindFormField("subscribe").Value = "yes";

filledPdf.SaveAs("completed-application.pdf");

using IronPdf;

// Create a form from HTML
var html = @"
    <form>
        <label>Name: <input type='text' name='fullName' required></label><br>
        <label>Email: <input type='email' name='email' required></label><br>
        <label>Subscribe: <input type='checkbox' name='subscribe' value='yes'></label><br>
        <label>
            Plan:
            <select name='plan'>
                <option value='basic'>Basic</option>
                <option value='pro'>Professional</option>
                <option value='enterprise'>Enterprise</option>
            </select>
        </label>
    </form>";

var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(html);

// Fill existing form
var filledPdf = PdfDocument.FromFile("application-form.pdf");
filledPdf.Form.FindFormField("fullName").Value = "John Doe";
filledPdf.Form.FindFormField("email").Value = "john@example.com";
filledPdf.Form.FindFormField("subscribe").Value = "yes";

filledPdf.SaveAs("completed-application.pdf");

HTML zu PDF Rendering

Einblicke in die wichtigsten Leistungsmerkmale

1. IronPDF glänzt bei:

   • Komplexem HTML-Rendering mit vollständiger Browserkompatibilität
   • Paralleler Verarbeitung für Batch-Operationen
   • Konstanter Performance über verschiedene Inhaltsarten hinweg
   • Asynchronen Operationen für bessere Skalierbarkeit
2. PDFSharpCore performt besser bei:
   • Einfache programmatische PDF-Erstellung
   • Geringerer Speicherbedarf
   • Grundlegende Dokumentenmodifikationen

Beispiel für die Leistung in der realen Welt

//IronPDF- Batch processing with parallel execution
using IronPdf;
using System.Threading.Tasks;

class BatchProcessor
{
    public static async Task ProcessInvoicesAsync(List<string> htmlInvoices)
    {
        var renderer = new ChromePdfRenderer();

        // Process multiple PDFs in parallel
        var tasks = htmlInvoices.Select(async (html, index) =>
        {
            var pdf = await renderer.RenderHtmlAsPdfAsync(html);
            await pdf.SaveAsAsync($"invoice-{index}.pdf");
        });

        await Task.WhenAll(tasks);
    }
}

//IronPDF- Batch processing with parallel execution
using IronPdf;
using System.Threading.Tasks;

class BatchProcessor
{
    public static async Task ProcessInvoicesAsync(List<string> htmlInvoices)
    {
        var renderer = new ChromePdfRenderer();

        // Process multiple PDFs in parallel
        var tasks = htmlInvoices.Select(async (html, index) =>
        {
            var pdf = await renderer.RenderHtmlAsPdfAsync(html);
            await pdf.SaveAsAsync($"invoice-{index}.pdf");
        });

        await Task.WhenAll(tasks);
    }
}

Wann sollte manIronPDFwählen

IronPDF ist ideal für:

1. Integration in Webanwendungen

   • Konvertierung dynamischer Webinhalte in PDFs
   • Berichtserstellung von Web-Dashboards
   • Erstellen von Rechnungen aus HTML-Vorlagen

2. Unternehmensdokumentenmanagement

   • Implementierung von Dokumenten-Workflows mit digitalen Signaturen
   • Erstellung sicherer, verschlüsselter PDFs für vertrauliche Daten
   • Batch-Verarbeitung großer Dokumentenmengen

3. SaaS-Anwendungen

   • Mandantenfähige PDF-Erzeugung
   • Cloud-native Implementierungen auf Azure/AWS
   • Hochleistungsfähige asynchrone Verarbeitung
4. Komplexe Berichterstellung
   • Finanzberichte mit Diagrammen und Grafiken
   • Marketingmaterialien mit reichhaltigen Medien
   • Technische Dokumentation mit Code-Highlighting

Wann sollte man sich für PDFSharpCore entscheiden

PDFSharpCore ist geeignet für:

1. Budgetbewusste Projekte

   • Open-Source-Projekte ohne Lizenzbudget
   • Einfache Anforderungen an die PDF-Generierung
   • Akademische oder persönliche Projekte

2. Grundlegende PDF-Operationen

   • Erstellung einfacher textbasierter PDFs
   • Grundlegendes Dokument-Merging
   • Hinzufügen einfacher Grafiken oder Formen
3. Leichtgewichtige Anwendungen
   • Eingebettete Systeme mit Speichereinschränkungen
   • Einfache Kommandozeilen-Tools
   • Microservices mit minimalen Abhängigkeiten

IronPDF-Lizenzierung

IronPDF bietet flexible Lizenzierungsoptionen (Preise ab 2025):

• Lite-Lizenz: $799 (1 Entwickler, 1 Standort, 1 Projekt)
• Plus-Lizenz: $1,199 (3 Entwickler, 3 Standorte, 3 Projekte)
• Professionelle Lizenz: $2,399 (10 Entwickler, 10 Standorte, 10 Projekte)
• Kostenlose Testversion : 30 Tage voll funktionsfähige Testversion

Zusätzliche Vorteile:

• Unbefristete Lizenzierung (Einmalkauf)
• Lizenzfreie Weiterverteilung verfügbar
• 24/5 technische Unterstützung inklusive
• Kostenlose Updates für ein Jahr
• Iron Suite-Paket für zusätzliche Einsparungen erhältlich

PDFSharpCore Lizenzierung

PDFSharpCore ist unter der MIT-Lizenz komplett kostenlos:

• Keine Lizenzkosten
• Keine Einschränkungen für kommerzielle Nutzung
• Nur Community-Unterstützung
• Keine garantierten Updates oder Fehlerbehebungen

Dokumentation und Ressourcen

IronPDF bietet:

• Umfangreiche Dokumentation
• 100+ Code-Beispiele
• Video-Tutorials
• Troubleshooting-Guides
• API-Referenz

PDFSharpCore bietet:

• Grundlegende GitHub-Dokumentation
• Community-Beispiele
• Begrenzte offizielle Tutorials

Vergleich der Unterstützung