C#でのHTMLからPDFへの変換: オープンソース対IronPDFの比較

using iTextSharp.text;
using iTextSharp.text.pdf;

var memoryStream = new MemoryStream();
Document pdfDoc = new Document(PageSize.A4, 25, 25, 25, 15);
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, memoryStream);
pdfDoc.Open();

var paragraph = new Paragraph("Hello World - PDF Document");
paragraph.Font = FontFactory.GetFont(FontFactory.HELVETICA, 16);
pdfDoc.Add(paragraph);
pdfDoc.Add(new Paragraph("Creating PDF documents with iTextSharp"));

pdfDoc.Close();

// Return as a downloadable file
var pdfBytes = memoryStream.ToArray();

Imports iTextSharp.text
Imports iTextSharp.text.pdf

Dim memoryStream As New MemoryStream()
Dim pdfDoc As New Document(PageSize.A4, 25, 25, 25, 15)
Dim writer As PdfWriter = PdfWriter.GetInstance(pdfDoc, memoryStream)
pdfDoc.Open()

Dim paragraph As New Paragraph("Hello World - PDF Document")
paragraph.Font = FontFactory.GetFont(FontFactory.HELVETICA, 16)
pdfDoc.Add(paragraph)
pdfDoc.Add(New Paragraph("Creating PDF documents with iTextSharp"))

pdfDoc.Close()

' Return as a downloadable file
Dim pdfBytes As Byte() = memoryStream.ToArray()

using IronPdf;

var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(@"
    <h1>Hello World - PDF Document</h1>
    <p>Creating PDFs with IronPDF is straightforward!</p>
");

var pdfBytes = pdf.BinaryData;

Imports IronPdf

Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf("
    <h1>Hello World - PDF Document</h1>
    <p>Creating PDFs with IronPDF is straightforward!</p>
")

Dim pdfBytes = pdf.BinaryData

using IronPdf;

var html = @"
    <style>
        body { font-family: Arial, sans-serif; margin: 0; }
        .invoice-header { background: #4CAF50; color: white; padding: 20px; }
        .invoice-table { width: 100%; border-collapse: collapse; margin-top: 20px; }
        .invoice-table th, .invoice-table td {
            border: 1px solid #ddd; padding: 8px; text-align: left;
        }
        .invoice-table th { background-color: #f2f2f2; }
        .total { font-size: 18px; font-weight: bold; margin-top: 16px; }
    </style>
    <div class='invoice-header'>
        <h1>Invoice #2024-001</h1>
        <p>Due: March 15, 2024</p>
    </div>
    <table class='invoice-table'>
        <tr><th>Item</th><th>Quantity</th><th>Unit Price</th><th>Total</th></tr>
        <tr><td>PDF License</td><td>1</td><td>$599</td><td>$599</td></tr>
        <tr><td>Support Package</td><td>1</td><td>$199</td><td>$199</td></tr>
    </table>
    <p class='total'>Grand Total: $798</p>
";

var renderer = new ChromePdfRenderer();
var pdfDocument = renderer.RenderHtmlAsPdf(html);
var pdfBytes = pdfDocument.BinaryData;

Imports IronPdf

Dim html As String = "
    <style>
        body { font-family: Arial, sans-serif; margin: 0; }
        .invoice-header { background: #4CAF50; color: white; padding: 20px; }
        .invoice-table { width: 100%; border-collapse: collapse; margin-top: 20px; }
        .invoice-table th, .invoice-table td {
            border: 1px solid #ddd; padding: 8px; text-align: left;
        }
        .invoice-table th { background-color: #f2f2f2; }
        .total { font-size: 18px; font-weight: bold; margin-top: 16px; }
    </style>
    <div class='invoice-header'>
        <h1>Invoice #2024-001</h1>
        <p>Due: March 15, 2024</p>
    </div>
    <table class='invoice-table'>
        <tr><th>Item</th><th>Quantity</th><th>Unit Price</th><th>Total</th></tr>
        <tr><td>PDF License</td><td>1</td><td>$599</td><td>$599</td></tr>
        <tr><td>Support Package</td><td>1</td><td>$199</td><td>$199</td></tr>
    </table>
    <p class='total'>Grand Total: $798</p>
"

Dim renderer As New ChromePdfRenderer()
Dim pdfDocument = renderer.RenderHtmlAsPdf(html)
Dim pdfBytes = pdfDocument.BinaryData

using iTextSharp.text;
using iTextSharp.text.pdf;

var output = new MemoryStream();
var document = new Document(PageSize.A4);
PdfWriter.GetInstance(document, output);
document.Open();

// Header -- manual font and color setup
var titleFont = FontFactory.GetFont(FontFactory.HELVETICA_BOLD, 20,
    new BaseColor(255, 255, 255));
var headerParagraph = new Paragraph("Invoice #2024-001", titleFont);
document.Add(headerParagraph);

// Table -- each cell must be created individually
PdfPTable table = new PdfPTable(4);
table.WidthPercentage = 100;

string[] headers = { "Item", "Quantity", "Unit Price", "Total" };
foreach (var h in headers)
{
    var cell = new PdfPCell(new Phrase(h,
        FontFactory.GetFont(FontFactory.HELVETICA_BOLD, 10)));
    cell.BackgroundColor = new BaseColor(242, 242, 242);
    table.AddCell(cell);
}

table.AddCell("PDF License");
table.AddCell("1");
table.AddCell("$599");
table.AddCell("$599");
document.Add(table);

var totalFont = FontFactory.GetFont(FontFactory.HELVETICA_BOLD, 14);
document.Add(new Paragraph("Grand Total: $798", totalFont));
document.Close();

Imports iTextSharp.text
Imports iTextSharp.text.pdf

Dim output As New MemoryStream()
Dim document As New Document(PageSize.A4)
PdfWriter.GetInstance(document, output)
document.Open()

' Header -- manual font and color setup
Dim titleFont As Font = FontFactory.GetFont(FontFactory.HELVETICA_BOLD, 20, New BaseColor(255, 255, 255))
Dim headerParagraph As New Paragraph("Invoice #2024-001", titleFont)
document.Add(headerParagraph)

' Table -- each cell must be created individually
Dim table As New PdfPTable(4)
table.WidthPercentage = 100

Dim headers As String() = {"Item", "Quantity", "Unit Price", "Total"}
For Each h As String In headers
    Dim cell As New PdfPCell(New Phrase(h, FontFactory.GetFont(FontFactory.HELVETICA_BOLD, 10)))
    cell.BackgroundColor = New BaseColor(242, 242, 242)
    table.AddCell(cell)
Next

table.AddCell("PDF License")
table.AddCell("1")
table.AddCell("$599")
table.AddCell("$599")
document.Add(table)

Dim totalFont As Font = FontFactory.GetFont(FontFactory.HELVETICA_BOLD, 14)
document.Add(New Paragraph("Grand Total: $798", totalFont))
document.Close()

using IronPdf;
using Microsoft.AspNetCore.Mvc;

[ApiController]
[Route("api/[controller]")]
public class PdfController : ControllerBase
{
    [HttpGet("invoice/{id}")]
    public IActionResult GenerateInvoice(int id)
    {
        var html = BuildInvoiceHtml(id); // your HTML template

        var renderer = new ChromePdfRenderer();
        renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.A4;
        renderer.RenderingOptions.MarginTop = 20;
        renderer.RenderingOptions.MarginBottom = 20;

        var pdf = renderer.RenderHtmlAsPdf(html);

        return File(pdf.BinaryData, "application/pdf", $"invoice-{id}.pdf");
    }

    private static string BuildInvoiceHtml(int id)
    {
        return $"<h1>Invoice #{id}</h1><p>Generated on {DateTime.UtcNow:yyyy-MM-dd}</p>";
    }
}

Imports IronPdf
Imports Microsoft.AspNetCore.Mvc

<ApiController>
<Route("api/[controller]")>
Public Class PdfController
    Inherits ControllerBase

    <HttpGet("invoice/{id}")>
    Public Function GenerateInvoice(id As Integer) As IActionResult
        Dim html As String = BuildInvoiceHtml(id) ' your HTML template

        Dim renderer As New ChromePdfRenderer()
        renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.A4
        renderer.RenderingOptions.MarginTop = 20
        renderer.RenderingOptions.MarginBottom = 20

        Dim pdf = renderer.RenderHtmlAsPdf(html)

        Return File(pdf.BinaryData, "application/pdf", $"invoice-{id}.pdf")
    End Function

    Private Shared Function BuildInvoiceHtml(id As Integer) As String
        Return $"<h1>Invoice #{id}</h1><p>Generated on {DateTime.UtcNow:yyyy-MM-dd}</p>"
    End Function
End Class