IronPDF與HiQPdf C#之比較

using IronPdf;

// Create a new PDF renderer
var renderer = new ChromePdfRenderer();

// Render HTML to PDF
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");
pdf.SaveAs("output.pdf");

// Render HTML to PDF with assets
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

Imports IronPdf

' Create a new PDF renderer
Private renderer = New ChromePdfRenderer()

' Render HTML to PDF
Private pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>")
pdf.SaveAs("output.pdf")

' Render HTML to PDF with assets
Dim myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", "C:\site\assets\")
myAdvancedPdf.SaveAs("html-with-assets.pdf")

// Create the HTML to PDF converter
HtmlToPdf htmlToPdfConverter = new HtmlToPdf();

// Convert HTML code to a PDF file
htmlToPdfConverter.ConvertHtmlToFile("<b>Hello World</b>", null, "result.pdf");

' Create the HTML to PDF converter
Dim htmlToPdfConverter As New HtmlToPdf()

' Convert HTML code to a PDF file
htmlToPdfConverter.ConvertHtmlToFile("<b>Hello World</b>", Nothing, "result.pdf")

using IronPdf;

// Load an existing PDF
var pdf = PdfDocument.FromFile("encrypted.pdf", "password");

// Set metadata and remove existing passwords
pdf.MetaData.Author = "Satoshi Nakamoto";
pdf.MetaData.Keywords = "SEO, Friendly";
pdf.MetaData.ModifiedDate = DateTime.Now;

// Update security settings
pdf.SecuritySettings.RemovePasswordsAndEncryption();
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key");
pdf.SecuritySettings.AllowUserAnnotations = false;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;
pdf.SecuritySettings.AllowUserFormData = false;
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights;

// Set a new password and save the document
pdf.Password = "my-password";
pdf.SaveAs("secured.pdf");

Imports IronPdf

' Load an existing PDF
Private pdf = PdfDocument.FromFile("encrypted.pdf", "password")

' Set metadata and remove existing passwords
pdf.MetaData.Author = "Satoshi Nakamoto"
pdf.MetaData.Keywords = "SEO, Friendly"
pdf.MetaData.ModifiedDate = DateTime.Now

' Update security settings
pdf.SecuritySettings.RemovePasswordsAndEncryption()
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key")
pdf.SecuritySettings.AllowUserAnnotations = False
pdf.SecuritySettings.AllowUserCopyPasteContent = False
pdf.SecuritySettings.AllowUserFormData = False
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights

' Set a new password and save the document
pdf.Password = "my-password"
pdf.SaveAs("secured.pdf")

// Create the HTML to PDF converter
HtmlToPdf htmlToPdfConverter = new HtmlToPdf();

// Set encryption mode and level
htmlToPdfConverter.Document.Security.EncryptionMode = GetSelectedEncryptionMode();
htmlToPdfConverter.Document.Security.EncryptionLevel = GetSelectedEncryptionLevel();

// Set open and permissions passwords
htmlToPdfConverter.Document.Security.OpenPassword = textBoxOpenPassword.Text;
htmlToPdfConverter.Document.Security.PermissionsPassword = textBoxPermissionsPassword.Text;

// Set PDF document permissions
htmlToPdfConverter.Document.Security.AllowPrinting = checkBoxAllowPrint.Checked;
htmlToPdfConverter.Document.Security.AllowCopyContent = checkBoxAllowCopy.Checked;
htmlToPdfConverter.Document.Security.AllowEditContent = checkBoxAllowEdit.Checked;
htmlToPdfConverter.Document.Security.AllowEditAnnotations = checkBoxAllowEditAnnotations.Checked;
htmlToPdfConverter.Document.Security.AllowFormFilling = checkBoxAllowFillForms.Checked;

// Set default permissions password if necessary
if (htmlToPdfConverter.Document.Security.PermissionsPassword == string.Empty &&
    (htmlToPdfConverter.Document.Security.OpenPassword != string.Empty || !IsDefaultPermission(htmlToPdfConverter.Document.Security)))
{
    htmlToPdfConverter.Document.Security.PermissionsPassword = "admin";
}

' Create the HTML to PDF converter
Dim htmlToPdfConverter As New HtmlToPdf()

' Set encryption mode and level
htmlToPdfConverter.Document.Security.EncryptionMode = GetSelectedEncryptionMode()
htmlToPdfConverter.Document.Security.EncryptionLevel = GetSelectedEncryptionLevel()

' Set open and permissions passwords
htmlToPdfConverter.Document.Security.OpenPassword = textBoxOpenPassword.Text
htmlToPdfConverter.Document.Security.PermissionsPassword = textBoxPermissionsPassword.Text

' Set PDF document permissions
htmlToPdfConverter.Document.Security.AllowPrinting = checkBoxAllowPrint.Checked
htmlToPdfConverter.Document.Security.AllowCopyContent = checkBoxAllowCopy.Checked
htmlToPdfConverter.Document.Security.AllowEditContent = checkBoxAllowEdit.Checked
htmlToPdfConverter.Document.Security.AllowEditAnnotations = checkBoxAllowEditAnnotations.Checked
htmlToPdfConverter.Document.Security.AllowFormFilling = checkBoxAllowFillForms.Checked

' Set default permissions password if necessary
If htmlToPdfConverter.Document.Security.PermissionsPassword = String.Empty AndAlso (htmlToPdfConverter.Document.Security.OpenPassword <> String.Empty OrElse Not IsDefaultPermission(htmlToPdfConverter.Document.Security)) Then
	htmlToPdfConverter.Document.Security.PermissionsPassword = "admin"
End If

using IronPdf;

// Load an existing PDF
PdfDocument pdf = PdfDocument.FromFile("novel.pdf");

// Redact specific text
pdf.RedactTextOnAllPages("are");

// Save the updated PDF
pdf.SaveAs("redacted.pdf");

Imports IronPdf

' Load an existing PDF
Private pdf As PdfDocument = PdfDocument.FromFile("novel.pdf")

' Redact specific text
pdf.RedactTextOnAllPages("are")

' Save the updated PDF
pdf.SaveAs("redacted.pdf")

using IronPdf;
using IronPdf.Signing;
using System.Security.Cryptography.X509Certificates;

// Create a PDF from HTML
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>foo</h1>");

// Load a digital certificate and sign the PDF
X509Certificate2 cert = new X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable);
var sig = new PdfSignature(cert);
pdf.Sign(sig);

// Save the signed PDF
pdf.SaveAs("signed.pdf");

Imports IronPdf
Imports IronPdf.Signing
Imports System.Security.Cryptography.X509Certificates

' Create a PDF from HTML
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>foo</h1>")

' Load a digital certificate and sign the PDF
Private cert As New X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable)
Private sig = New PdfSignature(cert)
pdf.Sign(sig)

' Save the signed PDF
pdf.SaveAs("signed.pdf")

// Create a PDF document
PdfDocument document = new PdfDocument();

// Add a page to the document
PdfPage page1 = document.AddPage();

// Create fonts for text
Font sysFont = new Font("Times New Roman", 10, System.Drawing.GraphicsUnit.Point);
PdfFont pdfFontEmbed = document.CreateFont(sysFont, true);

// Add a title to the PDF document
PdfText titleTextTransImage = new PdfText(5, 20, "Click the image below to open the digital signature", pdfFontEmbed);
titleTextTransImage.ForeColor = Color.Navy;
PdfLayoutInfo textLayoutInfo = page1.Layout(titleTextTransImage);

// Layout a PNG image with alpha transparency
PdfImage transparentPdfImage = new PdfImage(5, 50, Server.MapPath("~") + @"\DemoFiles\Images\HiQPdfLogo_small.png");
PdfLayoutInfo imageLayoutInfo = page1.Layout(transparentPdfImage);

// Apply digital signature
PdfCertificatesCollection pdfCertificates = PdfCertificatesCollection.FromFile(Server.MapPath("~") + @"\DemoFiles\Pfx\hiqpdf.pfx", "hiqpdf");
PdfDigitalSignature digitalSignature = new PdfDigitalSignature(pdfCertificates[0]);
digitalSignature.SigningReason = "My signing reason";
digitalSignature.SigningLocation = "My signing location";
digitalSignature.SignerContactInfo = "My contact info";
document.AddDigitalSignature(digitalSignature, imageLayoutInfo.LastPdfPage, imageLayoutInfo.LastPageRectangle);

try
{
    // Write the PDF document to a memory buffer
    byte[] pdfBuffer = document.WriteToMemory();

    // Inform the browser about the binary data format
    HttpContext.Current.Response.AddHeader("Content-Type", "application/pdf");

    // Let the browser know how to open the PDF document and the file name
    HttpContext.Current.Response.AddHeader("Content-Disposition", String.Format("attachment; filename=DigitalSignatures.pdf; size={0}",
                pdfBuffer.Length.ToString()));

    // Write the PDF buffer to HTTP response
    HttpContext.Current.Response.BinaryWrite(pdfBuffer);

    // End the HTTP response
    HttpContext.Current.Response.End();
}
finally
{
    document.Close();
}

' Create a PDF document
Dim document As New PdfDocument()

' Add a page to the document
Dim page1 As PdfPage = document.AddPage()

' Create fonts for text
Dim sysFont As New Font("Times New Roman", 10, System.Drawing.GraphicsUnit.Point)
Dim pdfFontEmbed As PdfFont = document.CreateFont(sysFont, True)

' Add a title to the PDF document
Dim titleTextTransImage As New PdfText(5, 20, "Click the image below to open the digital signature", pdfFontEmbed)
titleTextTransImage.ForeColor = Color.Navy
Dim textLayoutInfo As PdfLayoutInfo = page1.Layout(titleTextTransImage)

' Layout a PNG image with alpha transparency
Dim transparentPdfImage As New PdfImage(5, 50, Server.MapPath("~") & "\DemoFiles\Images\HiQPdfLogo_small.png")
Dim imageLayoutInfo As PdfLayoutInfo = page1.Layout(transparentPdfImage)

' Apply digital signature
Dim pdfCertificates As PdfCertificatesCollection = PdfCertificatesCollection.FromFile(Server.MapPath("~") & "\DemoFiles\Pfx\hiqpdf.pfx", "hiqpdf")
Dim digitalSignature As New PdfDigitalSignature(pdfCertificates(0))
digitalSignature.SigningReason = "My signing reason"
digitalSignature.SigningLocation = "My signing location"
digitalSignature.SignerContactInfo = "My contact info"
document.AddDigitalSignature(digitalSignature, imageLayoutInfo.LastPdfPage, imageLayoutInfo.LastPageRectangle)

Try
	' Write the PDF document to a memory buffer
	Dim pdfBuffer() As Byte = document.WriteToMemory()

	' Inform the browser about the binary data format
	HttpContext.Current.Response.AddHeader("Content-Type", "application/pdf")

	' Let the browser know how to open the PDF document and the file name
	HttpContext.Current.Response.AddHeader("Content-Disposition", String.Format("attachment; filename=DigitalSignatures.pdf; size={0}", pdfBuffer.Length.ToString()))

	' Write the PDF buffer to HTTP response
	HttpContext.Current.Response.BinaryWrite(pdfBuffer)

	' End the HTTP response
	HttpContext.Current.Response.End()
Finally
	document.Close()
End Try

using IronPdf;

// Create a PDF renderer and render URL
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf");

// Apply a watermark to the PDF
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center);

// Save the PDF
pdf.SaveAs(@"C:\Path\To\Watermarked.pdf");

Imports IronPdf

' Create a PDF renderer and render URL
Private renderer = New ChromePdfRenderer()
Private pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf")

' Apply a watermark to the PDF
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center)

' Save the PDF
pdf.SaveAs("C:\Path\To\Watermarked.pdf")

using IronPdf;
using IronPdf.Editing;

// Create a PDF from HTML
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create and apply a text stamp
TextStamper textStamper = new TextStamper()
{
    Text = "Text Stamper!",
    FontFamily = "Bungee Spice",
    UseGoogleFont = true,
    FontSize = 30,
    IsBold = true,
    IsItalic = true,
    VerticalAlignment = VerticalAlignment.Top
};

pdf.ApplyStamp(textStamper);
pdf.SaveAs("stampText.pdf");

Imports IronPdf
Imports IronPdf.Editing

' Create a PDF from HTML
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>")

' Create and apply a text stamp
Private textStamper As New TextStamper() With {
	.Text = "Text Stamper!",
	.FontFamily = "Bungee Spice",
	.UseGoogleFont = True,
	.FontSize = 30,
	.IsBold = True,
	.IsItalic = True,
	.VerticalAlignment = VerticalAlignment.Top
}

pdf.ApplyStamp(textStamper)
pdf.SaveAs("stampText.pdf")

using IronPdf;
using IronPdf.Editing;

// Create a PDF from HTML
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create and apply an image stamp
ImageStamper imageStamper = new ImageStamper(new Uri("/img/svgs/iron-pdf-logo.svg"))
{
    VerticalAlignment = VerticalAlignment.Top
};

pdf.ApplyStamp(imageStamper, 0);
pdf.SaveAs("stampImage.pdf");

Imports IronPdf
Imports IronPdf.Editing

' Create a PDF from HTML
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>")

' Create and apply an image stamp
Private imageStamper As New ImageStamper(New Uri("/img/svgs/iron-pdf-logo.svg")) With {.VerticalAlignment = VerticalAlignment.Top}

pdf.ApplyStamp(imageStamper, 0)
pdf.SaveAs("stampImage.pdf")

using IronPdf;

// Render DOCX to PDF
DocxToPdfRenderer renderer = new DocxToPdfRenderer();
PdfDocument pdf = renderer.RenderDocxAsPdf("Modern-chronological-resume.docx");

// Save the converted PDF
pdf.SaveAs("pdfFromDocx.pdf");

Imports IronPdf

' Render DOCX to PDF
Private renderer As New DocxToPdfRenderer()
Private pdf As PdfDocument = renderer.RenderDocxAsPdf("Modern-chronological-resume.docx")

' Save the converted PDF
pdf.SaveAs("pdfFromDocx.pdf")

using IronPdf;

var renderer = new ChromePdfRenderer();

string bootstrapBlog = @"
<!DOCTYPE html>
<html>
<head>
    <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css' rel='stylesheet'>
</head>
<body>
    <div class='container my-5'>
        <h1 class='text-center mb-5'>Latest Blog Posts</h1>

        <article class='card mb-4 shadow-sm'>
            <div class='row g-0'>
                <div class='col-md-4'>
                    <img src='https://via.placeholder.com/400x300' class='img-fluid rounded-start' alt='Blog post'>
                </div>
                <div class='col-md-8'>
                    <div class='card-body d-flex flex-column h-100'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <span class='badge bg-primary'>Technology</span>
                            <small class='text-muted'>March 15, 2025</small>
                        </div>
                        <h2 class='card-title h4'>The Future of Web Development</h2>
                        <p class='card-text flex-grow-1'>Exploring emerging trends in web development including serverless architecture, edge computing, and the evolution of JavaScript frameworks...</p>
                        <div class='mt-auto'>
                            <a href='#' class='btn btn-outline-primary'>Read More</a>
                        </div>
                    </div>
                </div>
            </div>
        </article>

        <article class='card mb-4 shadow-sm'>
            <div class='row g-0'>
                <div class='col-md-4'>
                    <img src='https://via.placeholder.com/400x300' class='img-fluid rounded-start' alt='Blog post'>
                </div>
                <div class='col-md-8'>
                    <div class='card-body d-flex flex-column h-100'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <span class='badge bg-success'>Tutorial</span>
                            <small class='text-muted'>March 10, 2025</small>
                        </div>
                        <h2 class='card-title h4'>Mastering Docker Containerization</h2>
                        <p class='card-text flex-grow-1'>A comprehensive guide to Docker containerization, from basics to advanced deployment strategies for production environments...</p>
                        <div class='mt-auto'>
                            <a href='#' class='btn btn-outline-primary'>Read More</a>
                        </div>
                    </div>
                </div>
            </div>
        </article>

        <nav aria-label='Blog pagination'>
            <ul class='pagination justify-content-center'>
                <li class='page-item disabled'>
                    <a class='page-link'>Previous</a>
                </li>
                <li class='page-item active'><a class='page-link' href='#'>1</a></li>
                <li class='page-item'><a class='page-link' href='#'>2</a></li>
                <li class='page-item'><a class='page-link' href='#'>3</a></li>
                <li class='page-item'>
                    <a class='page-link' href='#'>Next</a>
                </li>
            </ul>
        </nav>
    </div>
</body>
</html>";

var pdf = renderer.RenderHtmlAsPdf(bootstrapBlog);
pdf.SaveAs("blog-posts.pdf");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()

Dim bootstrapBlog As String = "
<!DOCTYPE html>
<html>
<head>
    <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css' rel='stylesheet'>
</head>
<body>
    <div class='container my-5'>
        <h1 class='text-center mb-5'>Latest Blog Posts</h1>

        <article class='card mb-4 shadow-sm'>
            <div class='row g-0'>
                <div class='col-md-4'>
                    <img src='https://via.placeholder.com/400x300' class='img-fluid rounded-start' alt='Blog post'>
                </div>
                <div class='col-md-8'>
                    <div class='card-body d-flex flex-column h-100'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <span class='badge bg-primary'>Technology</span>
                            <small class='text-muted'>March 15, 2025</small>
                        </div>
                        <h2 class='card-title h4'>The Future of Web Development</h2>
                        <p class='card-text flex-grow-1'>Exploring emerging trends in web development including serverless architecture, edge computing, and the evolution of JavaScript frameworks...</p>
                        <div class='mt-auto'>
                            <a href='#' class='btn btn-outline-primary'>Read More</a>
                        </div>
                    </div>
                </div>
            </div>
        </article>

        <article class='card mb-4 shadow-sm'>
            <div class='row g-0'>
                <div class='col-md-4'>
                    <img src='https://via.placeholder.com/400x300' class='img-fluid rounded-start' alt='Blog post'>
                </div>
                <div class='col-md-8'>
                    <div class='card-body d-flex flex-column h-100'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <span class='badge bg-success'>Tutorial</span>
                            <small class='text-muted'>March 10, 2025</small>
                        </div>
                        <h2 class='card-title h4'>Mastering Docker Containerization</h2>
                        <p class='card-text flex-grow-1'>A comprehensive guide to Docker containerization, from basics to advanced deployment strategies for production environments...</p>
                        <div class='mt-auto'>
                            <a href='#' class='btn btn-outline-primary'>Read More</a>
                        </div>
                    </div>
                </div>
            </div>
        </article>

        <nav aria-label='Blog pagination'>
            <ul class='pagination justify-content-center'>
                <li class='page-item disabled'>
                    <a class='page-link'>Previous</a>
                </li>
                <li class='page-item active'><a class='page-link' href='#'>1</a></li>
                <li class='page-item'><a class='page-link' href='#'>2</a></li>
                <li class='page-item'><a class='page-link' href='#'>3</a></li>
                <li class='page-item'>
                    <a class='page-link' href='#'>Next</a>
                </li>
            </ul>
        </nav>
    </div>
</body>
</html>"

Dim pdf = renderer.RenderHtmlAsPdf(bootstrapBlog)
pdf.SaveAs("blog-posts.pdf")