Chrome에서 HTML을 디버깅하여 픽셀 단위까지 완벽한 PDF를 만드는 방법

# Remove iText packages (current naming is 'itext'; 'itext7' is the deprecated alias)
dotnet remove package itext
dotnet remove package itext.pdfhtml
dotnet remove package itext7
dotnet remove package itext7.pdfhtml
dotnet remove package itextsharp

# Install IronPDF
dotnet add package IronPdf

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

' Add at application startup (Program.vb or Startup.vb)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

# Find all iText references
grep -r "using iText\|using iTextSharp" --include="*.cs" .
grep -r "PdfWriter\|PdfDocument\|Document\|Paragraph\|Table\|Cell" --include="*.cs" .
grep -r "HtmlConverter\|ConverterProperties" --include="*.cs" .

// NuGet: Install-Package itext7
using iText.Html2pdf;
using System.IO;

class Program
{
    static void Main()
    {
        string html = "<h1>Hello World</h1><p>This is a PDF from HTML.</p>";
        string outputPath = "output.pdf";

        using (FileStream fs = new FileStream(outputPath, FileMode.Create))
        {
            HtmlConverter.ConvertToPdf(html, fs);
        }
    }
}

Imports iText.Html2pdf
Imports System.IO

Class Program
    Shared Sub Main()
        Dim html As String = "<h1>Hello World</h1><p>This is a PDF from HTML.</p>"
        Dim outputPath As String = "output.pdf"

        Using fs As FileStream = New FileStream(outputPath, FileMode.Create)
            HtmlConverter.ConvertToPdf(html, fs)
        End Using
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        string html = "<h1>Hello World</h1><p>This is a PDF from HTML.</p>";

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

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim html As String = "<h1>Hello World</h1><p>This is a PDF from HTML.</p>"

        Dim pdf = renderer.RenderHtmlAsPdf(html)
        pdf.SaveAs("output.pdf")
    End Sub
End Class

// NuGet: Install-Package itext7
using iText.Kernel.Pdf;
using iText.Kernel.Utils;
using System.IO;

class Program
{
    static void Main()
    {
        string outputPath = "merged.pdf";
        string[] inputFiles = { "document1.pdf", "document2.pdf", "document3.pdf" };

        using (PdfWriter writer = new PdfWriter(outputPath))
        using (PdfDocument pdfDoc = new PdfDocument(writer))
        {
            PdfMerger merger = new PdfMerger(pdfDoc);

            foreach (string file in inputFiles)
            {
                using (PdfDocument sourcePdf = new PdfDocument(new PdfReader(file)))
                {
                    merger.Merge(sourcePdf, 1, sourcePdf.GetNumberOfPages());
                }
            }
        }
    }
}

Imports iText.Kernel.Pdf
Imports iText.Kernel.Utils
Imports System.IO

Class Program
    Shared Sub Main()
        Dim outputPath As String = "merged.pdf"
        Dim inputFiles As String() = {"document1.pdf", "document2.pdf", "document3.pdf"}

        Using writer As New PdfWriter(outputPath)
            Using pdfDoc As New PdfDocument(writer)
                Dim merger As New PdfMerger(pdfDoc)

                For Each file As String In inputFiles
                    Using sourcePdf As New PdfDocument(New PdfReader(file))
                        merger.Merge(sourcePdf, 1, sourcePdf.GetNumberOfPages())
                    End Using
                Next
            End Using
        End Using
    End Sub
End Class

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

class Program
{
    static void Main()
    {
        var pdfDocuments = new List<PdfDocument>
        {
            PdfDocument.FromFile("document1.pdf"),
            PdfDocument.FromFile("document2.pdf"),
            PdfDocument.FromFile("document3.pdf")
        };

        var merged = PdfDocument.Merge(pdfDocuments);
        merged.SaveAs("merged.pdf");
    }
}

Imports IronPdf
Imports System.Collections.Generic

Class Program
    Shared Sub Main()
        Dim pdfDocuments As New List(Of PdfDocument) From {
            PdfDocument.FromFile("document1.pdf"),
            PdfDocument.FromFile("document2.pdf"),
            PdfDocument.FromFile("document3.pdf")
        }

        Dim merged = PdfDocument.Merge(pdfDocuments)
        merged.SaveAs("merged.pdf")
    End Sub
End Class

// NuGet: Install-Package itext7
using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
using iText.IO.Image;

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

        using (PdfWriter writer = new PdfWriter(outputPath))
        using (PdfDocument pdf = new PdfDocument(writer))
        using (Document document = new Document(pdf))
        {
            document.Add(new Paragraph("Sample PDF Document"));
            document.Add(new Paragraph("This document contains text and an image."));

            Image img = new Image(ImageDataFactory.Create("image.jpg"));
            img.SetWidth(200);
            document.Add(img);
        }
    }
}

Imports iText.Kernel.Pdf
Imports iText.Layout
Imports iText.Layout.Element
Imports iText.IO.Image

Class Program
    Shared Sub Main()
        Dim outputPath As String = "document.pdf"

        Using writer As New PdfWriter(outputPath),
              pdf As New PdfDocument(writer),
              document As New Document(pdf)

            document.Add(New Paragraph("Sample PDF Document"))
            document.Add(New Paragraph("This document contains text and an image."))

            Dim img As New Image(ImageDataFactory.Create("image.jpg"))
            img.SetWidth(200)
            document.Add(img)
        End Using
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string html = @"
            <h1>Sample PDF Document</h1>
            <p>This document contains text and an image.</p>
            <img src='image.jpg' width='200' />";

        var pdf = renderer.RenderHtmlAsPdf(html);
        pdf.SaveAs("document.pdf");
    }
}

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()

        Dim html As String = "
            <h1>Sample PDF Document</h1>
            <p>This document contains text and an image.</p>
            <img src='image.jpg' width='200' />"

        Dim pdf = renderer.RenderHtmlAsPdf(html)
        pdf.SaveAs("document.pdf")
    End Sub
End Class

// iText approach
document.Add(new Paragraph("Title")
    .SetTextAlignment(TextAlignment.CENTER)
    .SetFontSize(24)
    .SetBold());

var table = new Table(UnitValue.CreatePercentArray(3)).UseAllAvailableWidth();
table.AddHeaderCell(new Cell().Add(new Paragraph("ID")));
table.AddHeaderCell(new Cell().Add(new Paragraph("Name")));
// ... many more lines

' iText approach
document.Add(New Paragraph("Title") _
    .SetTextAlignment(TextAlignment.CENTER) _
    .SetFontSize(24) _
    .SetBold())

Dim table = New Table(UnitValue.CreatePercentArray(3)).UseAllAvailableWidth()
table.AddHeaderCell(New Cell().Add(New Paragraph("ID")))
table.AddHeaderCell(New Cell().Add(New Paragraph("Name")))
' ... many more lines

//IronPDF approach
string html = @"
    <style>
        h1 { text-align: center; font-size: 24px; font-weight: bold; }
        table { width: 100%; border-collapse: collapse; }
        th { background-color: #4CAF50; color: white; padding: 8px; }
    </style>
    <h1>Title</h1>
    <table>
        <tr><th>ID</th><th>Name</th></tr>
    </table>";

var pdf = renderer.RenderHtmlAsPdf(html);

Imports IronPdf

Dim html As String = "
    <style>
        h1 { text-align: center; font-size: 24px; font-weight: bold; }
        table { width: 100%; border-collapse: collapse; }
        th { background-color: #4CAF50; color: white; padding: 8px; }
    </style>
    <h1>Title</h1>
    <table>
        <tr><th>ID</th><th>Name</th></tr>
    </table>"

Dim pdf = renderer.RenderHtmlAsPdf(html)

// Delete this iText pattern:
// using (var writer = new PdfWriter(outputPath))
// using (var pdfDoc = new PdfDocument(writer))
// using (var document = new Document(pdfDoc))

// Replace with:
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(html);
pdf.SaveAs(outputPath);

Imports IronPdf

Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf(html)
pdf.SaveAs(outputPath)

// iText (requires pdfHTML add-on)
HtmlConverter.ConvertToPdf(html, fileStream);

//IronPDF(built-in)
var pdf = renderer.RenderHtmlAsPdf(html);
pdf.SaveAs(outputPath);

' iText (requires pdfHTML add-on)
HtmlConverter.ConvertToPdf(html, fileStream)

' IronPDF(built-in)
Dim pdf = renderer.RenderHtmlAsPdf(html)
pdf.SaveAs(outputPath)

// iText merger pattern (delete this)
// using (PdfDocument pdfDoc = new PdfDocument(writer))
// {
//     PdfMerger merger = new PdfMerger(pdfDoc);
//     foreach (string file in inputFiles)
//     {
//         using (PdfDocument sourcePdf = new PdfDocument(new PdfReader(file)))
//         {
//             merger.Merge(sourcePdf, 1, sourcePdf.GetNumberOfPages());
//         }
//     }
// }

//IronPDF(simple)
var merged = PdfDocument.Merge(pdfDocuments);
merged.SaveAs("merged.pdf");

Imports System.Collections.Generic

' iText merger pattern (delete this)
' Using pdfDoc As New PdfDocument(writer)
'     Dim merger As New PdfMerger(pdfDoc)
'     For Each file As String In inputFiles
'         Using sourcePdf As New PdfDocument(New PdfReader(file))
'             merger.Merge(sourcePdf, 1, sourcePdf.GetNumberOfPages())
'         End Using
'     Next
' End Using

' IronPDF(simple)
Dim merged = PdfDocument.Merge(pdfDocuments)
merged.SaveAs("merged.pdf")