// Add at application startup (Program.cs or Startup.cs)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

// Add at application startup (Program.cs or Startup.cs)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

// PDFium wrappers (use the one you installed)
using PdfiumViewer;             // PdfiumViewer / PdfiumViewer.Updated
using PDFiumCore;               // Dtronix PDFiumCore (P/Invoke bindings)
using Patagames.Pdf;            // Patagames Pdfium.Net.SDK
using Patagames.Pdf.Net;        // Patagames Pdfium.Net.SDK

// IronPDF
using IronPdf;
using IronPdf.Rendering;
using IronPdf.Editing;

// PDFium wrappers (use the one you installed)
using PdfiumViewer;             // PdfiumViewer / PdfiumViewer.Updated
using PDFiumCore;               // Dtronix PDFiumCore (P/Invoke bindings)
using Patagames.Pdf;            // Patagames Pdfium.Net.SDK
using Patagames.Pdf.Net;        // Patagames Pdfium.Net.SDK

// IronPDF
using IronPdf;
using IronPdf.Rendering;
using IronPdf.Editing;

// NuGet: Install-Package PdfiumViewer  (Apache 2.0; archived Aug 2019, .NET Framework 2.0+)
//        or Install-Package PdfiumViewer.Updated  (maintained fork, .NET Core / .NET 6)
//        or Install-Package PDFiumCore             (Dtronix, .NET Standard 2.1 P/Invoke)
//        or Install-Package Pdfium.Net.SDK         (Patagames, commercial perpetual license)
using PdfiumViewer;
using System;
using System.IO;
using System.Text;

class Program
{
    static void Main()
    {
        string pdfPath = "document.pdf";

        using (var document = PdfDocument.Load(pdfPath))
        {
            StringBuilder text = new StringBuilder();

            for (int i = 0; i < document.PageCount; i++)
            {
                // PdfiumViewer's text extraction is per-page raw text via GetPdfText(int).
                // No layout / format metadata is exposed.
                string pageText = document.GetPdfText(i);
                text.AppendLine(pageText);
            }

            Console.WriteLine(text.ToString());
        }
    }
}

// NuGet: Install-Package PdfiumViewer  (Apache 2.0; archived Aug 2019, .NET Framework 2.0+)
//        or Install-Package PdfiumViewer.Updated  (maintained fork, .NET Core / .NET 6)
//        or Install-Package PDFiumCore             (Dtronix, .NET Standard 2.1 P/Invoke)
//        or Install-Package Pdfium.Net.SDK         (Patagames, commercial perpetual license)
using PdfiumViewer;
using System;
using System.IO;
using System.Text;

class Program
{
    static void Main()
    {
        string pdfPath = "document.pdf";

        using (var document = PdfDocument.Load(pdfPath))
        {
            StringBuilder text = new StringBuilder();

            for (int i = 0; i < document.PageCount; i++)
            {
                // PdfiumViewer's text extraction is per-page raw text via GetPdfText(int).
                // No layout / format metadata is exposed.
                string pageText = document.GetPdfText(i);
                text.AppendLine(pageText);
            }

            Console.WriteLine(text.ToString());
        }
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

        string pdfPath = "document.pdf";

        var pdf = PdfDocument.FromFile(pdfPath);
        string text = pdf.ExtractAllText();

        Console.WriteLine(text);
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

        string pdfPath = "document.pdf";

        var pdf = PdfDocument.FromFile(pdfPath);
        string text = pdf.ExtractAllText();

        Console.WriteLine(text);
    }
}

// NuGet: Install-Package PdfiumViewer  (representative open-source PDFium wrapper)
// PdfiumViewer and PDFiumCore do not expose PDF merge APIs - PDFium itself
// is a rendering / parsing engine, not a document-authoring engine.
// (Patagames Pdfium.Net.SDK exposes some document-edit operations but is commercial.)
using PdfiumViewer;
using System;
using System.IO;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        List<string> pdfFiles = new List<string>
        {
            "document1.pdf",
            "document2.pdf",
            "document3.pdf"
        };

        // To merge PDFs from a PDFium wrapper you must reach for another library
        // (PdfSharp, iText, IronPDF) or, with Patagames Pdfium.Net.SDK, use its
        // document-edit APIs.

        Console.WriteLine("PDF merging is not supported by PdfiumViewer / PDFiumCore.");
    }
}

// NuGet: Install-Package PdfiumViewer  (representative open-source PDFium wrapper)
// PdfiumViewer and PDFiumCore do not expose PDF merge APIs - PDFium itself
// is a rendering / parsing engine, not a document-authoring engine.
// (Patagames Pdfium.Net.SDK exposes some document-edit operations but is commercial.)
using PdfiumViewer;
using System;
using System.IO;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        List<string> pdfFiles = new List<string>
        {
            "document1.pdf",
            "document2.pdf",
            "document3.pdf"
        };

        // To merge PDFs from a PDFium wrapper you must reach for another library
        // (PdfSharp, iText, IronPDF) or, with Patagames Pdfium.Net.SDK, use its
        // document-edit APIs.

        Console.WriteLine("PDF merging is not supported by PdfiumViewer / PDFiumCore.");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

        List<string> pdfFiles = new List<string>
        {
            "document1.pdf",
            "document2.pdf",
            "document3.pdf"
        };

        // PdfDocument.Merge accepts an IEnumerable<PdfDocument>, so load each file first.
        var docs = pdfFiles.Select(path => PdfDocument.FromFile(path)).ToList();
        var merged = PdfDocument.Merge(docs);
        merged.SaveAs("merged.pdf");

        Console.WriteLine("PDFs merged successfully");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

        List<string> pdfFiles = new List<string>
        {
            "document1.pdf",
            "document2.pdf",
            "document3.pdf"
        };

        // PdfDocument.Merge accepts an IEnumerable<PdfDocument>, so load each file first.
        var docs = pdfFiles.Select(path => PdfDocument.FromFile(path)).ToList();
        var merged = PdfDocument.Merge(docs);
        merged.SaveAs("merged.pdf");

        Console.WriteLine("PDFs merged successfully");
    }
}

// NuGet: Install-Package PdfiumViewer  (representative PDFium wrapper)
// PDFium is a PDF rendering / parsing engine. It has NO HTML parser, so no
// PDFium .NET wrapper (PdfiumViewer, PdfiumViewer.Updated, PDFiumCore,
// Pdfium.Net.SDK) can convert HTML to PDF on its own.
using PdfiumViewer;
using System;
using System.IO;
using System.Drawing.Printing;

class Program
{
    static void Main()
    {
        // PDFium has no native HTML-to-PDF capability.
        // Produce the PDF with another engine (wkhtmltopdf, headless Chromium,
        // IronPDF, etc.) and then load it with PdfDocument.Load(...) for rendering.
        string htmlContent = "<h1>Hello World</h1>";

        Console.WriteLine("HTML to PDF conversion is not supported by PDFium.");
    }
}

// NuGet: Install-Package PdfiumViewer  (representative PDFium wrapper)
// PDFium is a PDF rendering / parsing engine. It has NO HTML parser, so no
// PDFium .NET wrapper (PdfiumViewer, PdfiumViewer.Updated, PDFiumCore,
// Pdfium.Net.SDK) can convert HTML to PDF on its own.
using PdfiumViewer;
using System;
using System.IO;
using System.Drawing.Printing;

class Program
{
    static void Main()
    {
        // PDFium has no native HTML-to-PDF capability.
        // Produce the PDF with another engine (wkhtmltopdf, headless Chromium,
        // IronPDF, etc.) and then load it with PdfDocument.Load(...) for rendering.
        string htmlContent = "<h1>Hello World</h1>";

        Console.WriteLine("HTML to PDF conversion is not supported by PDFium.");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

        var renderer = new ChromePdfRenderer();
        string htmlContent = "<h1>Hello World</h1>";

        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");

        Console.WriteLine("PDF created successfully");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

        var renderer = new ChromePdfRenderer();
        string htmlContent = "<h1>Hello World</h1>";

        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");

        Console.WriteLine("PDF created successfully");
    }
}

// Formula: IronPDF DPI = 72 × PDFium scale
// PDFium scale 2.0 → IronPDF DPI 144
pdf.RasterizeToImageFiles("*.png", DPI: 144);

// Formula: IronPDF DPI = 72 × PDFium scale
// PDFium scale 2.0 → IronPDF DPI 144
pdf.RasterizeToImageFiles("*.png", DPI: 144);

// PdfiumViewer
PdfDocument.Load(path)

// IronPDF
PdfDocument.FromFile(path)

// PdfiumViewer
PdfDocument.Load(path)

// IronPDF
PdfDocument.FromFile(path)

// PdfiumViewer (takes a Stream)
document.Save(stream)

// IronPDF (takes a path)
pdf.SaveAs(path)

// PdfiumViewer (takes a Stream)
document.Save(stream)

// IronPDF (takes a path)
pdf.SaveAs(path)

// PdfiumViewer: explicit disposal of document and the rendered Image
using (var document = PdfDocument.Load(path))
using (var bitmap = document.Render(0, 1024, 768, 96, 96, PdfRenderFlags.None))
{
    bitmap.Save("output.png");
}

// IronPDF: Simplified
var pdf = PdfDocument.FromFile(path);
pdf.RasterizeToImageFiles("output.png");

// PdfiumViewer: explicit disposal of document and the rendered Image
using (var document = PdfDocument.Load(path))
using (var bitmap = document.Render(0, 1024, 768, 96, 96, PdfRenderFlags.None))
{
    bitmap.Save("output.png");
}

// IronPDF: Simplified
var pdf = PdfDocument.FromFile(path);
pdf.RasterizeToImageFiles("output.png");

// PDFium wrapper: required platform detection / RID-specific binaries
#if WIN64
    // Load x64 pdfium.dll
#else
    // Load x86 pdfium.dll
#endif

// IronPDF: Remove all platform-specific code
// Just use the API directly

// PDFium wrapper: required platform detection / RID-specific binaries
#if WIN64
    // Load x64 pdfium.dll
#else
    // Load x86 pdfium.dll
#endif

// IronPDF: Remove all platform-specific code
// Just use the API directly