HTML 转 PDF 在 C# .NET 中

using IronPdf;

// ChromePdfRenderer turns HTML into a PDF using IronPDF's embedded Chrome engine
var renderer = new ChromePdfRenderer();

// Render an HTML string. The result is a PdfDocument held in memory
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello IronPdf</h1>");

// Write the PDF to disk
pdf.SaveAs("pixel-perfect.pdf");

using IronPdf;

// ChromePdfRenderer turns HTML into a PDF using IronPDF's embedded Chrome engine
var renderer = new ChromePdfRenderer();

// Render an HTML string. The result is a PdfDocument held in memory
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello IronPdf</h1>");

// Write the PDF to disk
pdf.SaveAs("pixel-perfect.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// The second argument is the base path. Relative URLs in the HTML (the image
// below, but also stylesheets, scripts and fonts) are resolved against it.
var pdf = renderer.RenderHtmlAsPdf("<img src='image1.png'/>", @"C:\MyProject\Assets\");

pdf.SaveAs(@"C:\MyProject\Assets\output.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// The second argument is the base path. Relative URLs in the HTML (the image
// below, but also stylesheets, scripts and fonts) are resolved against it.
var pdf = renderer.RenderHtmlAsPdf("<img src='image1.png'/>", @"C:\MyProject\Assets\");

pdf.SaveAs(@"C:\MyProject\Assets\output.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render a live web page straight from its URL
var pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/PDF");

// The PDF is written next to the executable
pdf.SaveAs("wikipedia.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render a live web page straight from its URL
var pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/PDF");

// The PDF is written next to the executable
pdf.SaveAs("wikipedia.pdf");

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Choose which CSS media type the page is rendered with.
// Screen (the default) renders the page as a browser displays it;
// Print applies the page's @media print rules instead.

// renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Screen;
renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Choose which CSS media type the page is rendered with.
// Screen (the default) renders the page as a browser displays it;
// Print applies the page's @media print rules instead.

// renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Screen;
renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

using IronPdf;

var renderer = new ChromePdfRenderer();

// Let the page's JavaScript run before the snapshot is taken
renderer.RenderingOptions.EnableJavaScript = true;

// Give scripts and AJAX calls 500 milliseconds to finish before rendering.
// For event-driven pages, WaitFor.NetworkIdle() or WaitFor.JavaScript() wait
// for a signal instead of a fixed delay.
renderer.RenderingOptions.WaitFor.RenderDelay(500);

using IronPdf;

var renderer = new ChromePdfRenderer();

// Let the page's JavaScript run before the snapshot is taken
renderer.RenderingOptions.EnableJavaScript = true;

// Give scripts and AJAX calls 500 milliseconds to finish before rendering.
// For event-driven pages, WaitFor.NetworkIdle() or WaitFor.JavaScript() wait
// for a signal instead of a fixed delay.
renderer.RenderingOptions.WaitFor.RenderDelay(500);

using IronPdf;

var renderer = new ChromePdfRenderer();

// The chart is drawn by JavaScript, so let it run and give it a moment to finish
renderer.RenderingOptions.EnableJavaScript = true;
renderer.RenderingOptions.WaitFor.RenderDelay(500);

// Render the d3.js chord-diagram documentation page, whose charts are drawn by JavaScript
var pdf = renderer.RenderUrlAsPdf("https://d3js.org/d3-chord");

pdf.SaveAs("chart.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// The chart is drawn by JavaScript, so let it run and give it a moment to finish
renderer.RenderingOptions.EnableJavaScript = true;
renderer.RenderingOptions.WaitFor.RenderDelay(500);

// Render the d3.js chord-diagram documentation page, whose charts are drawn by JavaScript
var pdf = renderer.RenderUrlAsPdf("https://d3js.org/d3-chord");

pdf.SaveAs("chart.pdf");

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Responsive layouts are designed for a browser viewport, so render the page's
// print stylesheet instead of its screen stylesheet
renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Responsive layouts are designed for a browser viewport, so render the page's
// print stylesheet instead of its screen stylesheet
renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render an HTML file from disk. Relative CSS, image and script paths
// resolve against the file's own folder, as if opened with file://
var pdf = renderer.RenderHtmlFileAsPdf("Assets/TestInvoice1.html");

pdf.SaveAs("Invoice.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render an HTML file from disk. Relative CSS, image and script paths
// resolve against the file's own folder, as if opened with file://
var pdf = renderer.RenderHtmlFileAsPdf("Assets/TestInvoice1.html");

pdf.SaveAs("Invoice.pdf");

using IronPdf;
using IronPdf.Rendering;

// Create a PDF from an existing HTML file with rendering options set up front
var renderer = new ChromePdfRenderer
{
    RenderingOptions = new ChromePdfRenderOptions
    {
        // Margins are in millimeters
        MarginTop = 50,
        MarginBottom = 50,

        // Render the page's print stylesheet
        CssMediaType = PdfCssMediaType.Print,

        // Plain-text header: the document title, centered, above a divider line
        TextHeader = new TextHeaderFooter
        {
            CenterText = "{pdf-title}",
            DrawDividerLine = true,
            FontSize = 16
        },

        // Plain-text footer: date and time on the left, page numbers on the right
        TextFooter = new TextHeaderFooter
        {
            LeftText = "{date} {time}",
            RightText = "Page {page} of {total-pages}",
            DrawDividerLine = true,
            FontSize = 14
        }
    }
};

var pdf = renderer.RenderHtmlFileAsPdf("Assets/TestInvoice1.html");

pdf.SaveAs("Invoice.pdf");

// Open the result in the default PDF viewer
System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
{
    FileName = "Invoice.pdf",
    UseShellExecute = true
});

using IronPdf;
using IronPdf.Rendering;

// Create a PDF from an existing HTML file with rendering options set up front
var renderer = new ChromePdfRenderer
{
    RenderingOptions = new ChromePdfRenderOptions
    {
        // Margins are in millimeters
        MarginTop = 50,
        MarginBottom = 50,

        // Render the page's print stylesheet
        CssMediaType = PdfCssMediaType.Print,

        // Plain-text header: the document title, centered, above a divider line
        TextHeader = new TextHeaderFooter
        {
            CenterText = "{pdf-title}",
            DrawDividerLine = true,
            FontSize = 16
        },

        // Plain-text footer: date and time on the left, page numbers on the right
        TextFooter = new TextHeaderFooter
        {
            LeftText = "{date} {time}",
            RightText = "Page {page} of {total-pages}",
            DrawDividerLine = true,
            FontSize = 14
        }
    }
};

var pdf = renderer.RenderHtmlFileAsPdf("Assets/TestInvoice1.html");

pdf.SaveAs("Invoice.pdf");

// Open the result in the default PDF viewer
System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
{
    FileName = "Invoice.pdf",
    UseShellExecute = true
});

using IronPdf;

var renderer = new ChromePdfRenderer();

// An HTML footer can carry markup, styles and images.
// {page} and {total-pages} are filled in for every page.
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align:right'><em style='color:pink'>page {page} of {total-pages}</em></div>"
};

using IronPdf;

var renderer = new ChromePdfRenderer();

// An HTML footer can carry markup, styles and images.
// {page} and {total-pages} are filled in for every page.
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align:right'><em style='color:pink'>page {page} of {total-pages}</em></div>"
};

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Render the page's @media print CSS rather than its screen styles
renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

renderer.RenderHtmlAsPdf("<html><body><h1>Hello, World!</h1></body></html>").SaveAs("Output.pdf");

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Render the page's @media print CSS rather than its screen styles
renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;

renderer.RenderHtmlAsPdf("<html><body><h1>Hello, World!</h1></body></html>").SaveAs("Output.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// Page margins in millimeters. Larger margins leave room for headers and
// footers; set them to 0 for edge-to-edge brochures and posters.
renderer.RenderingOptions.MarginTop = 50;
renderer.RenderingOptions.MarginBottom = 50;
renderer.RenderingOptions.MarginLeft = 20;
renderer.RenderingOptions.MarginRight = 20;

using IronPdf;

var renderer = new ChromePdfRenderer();

// Page margins in millimeters. Larger margins leave room for headers and
// footers; set them to 0 for edge-to-edge brochures and posters.
renderer.RenderingOptions.MarginTop = 50;
renderer.RenderingOptions.MarginBottom = 50;
renderer.RenderingOptions.MarginLeft = 20;
renderer.RenderingOptions.MarginRight = 20;

using IronPdf;

var renderer = new ChromePdfRenderer();

// Include CSS background colors and images in the PDF (set false to drop them)
renderer.RenderingOptions.PrintHtmlBackgrounds = true;

var pdf = renderer.RenderHtmlAsPdf("<h1 style='background:#eee'>Hello, PDF!</h1>");

pdf.SaveAs("output.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// Include CSS background colors and images in the PDF (set false to drop them)
renderer.RenderingOptions.PrintHtmlBackgrounds = true;

var pdf = renderer.RenderHtmlAsPdf("<h1 style='background:#eee'>Hello, PDF!</h1>");

pdf.SaveAs("output.pdf");

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Standard paper sizes and orientation
renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
renderer.RenderingOptions.PaperOrientation = PdfPaperOrientation.Landscape;

// Or a custom size, in millimeters or inches
// renderer.RenderingOptions.SetCustomPaperSizeinMilimeters(210, 297);
// renderer.RenderingOptions.SetCustomPaperSizeInInches(8.5, 11);

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Standard paper sizes and orientation
renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
renderer.RenderingOptions.PaperOrientation = PdfPaperOrientation.Landscape;

// Or a custom size, in millimeters or inches
// renderer.RenderingOptions.SetCustomPaperSizeinMilimeters(210, 297);
// renderer.RenderingOptions.SetCustomPaperSizeInInches(8.5, 11);

using IronPdf;

var renderer = new ChromePdfRenderer();

// Insert a value into an HTML template with string.Format
string html = string.Format("<h1>Hello {0}!</h1>", "World");

var pdf = renderer.RenderHtmlAsPdf(html);

pdf.SaveAs("Hello.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// Insert a value into an HTML template with string.Format
string html = string.Format("<h1>Hello {0}!</h1>", "World");

var pdf = renderer.RenderHtmlAsPdf(html);

pdf.SaveAs("Hello.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// A template with a placeholder to replace
var htmlTemplate = "<p>[[NAME]]</p>";

var names = new[] { "John", "James", "Jenny" };

// One personalized PDF per name
foreach (var name in names)
{
    var htmlInstance = htmlTemplate.Replace("[[NAME]]", name);

    var pdf = renderer.RenderHtmlAsPdf(htmlInstance);

    pdf.SaveAs(name + ".pdf");
}

using IronPdf;

var renderer = new ChromePdfRenderer();

// A template with a placeholder to replace
var htmlTemplate = "<p>[[NAME]]</p>";

var names = new[] { "John", "James", "Jenny" };

// One personalized PDF per name
foreach (var name in names)
{
    var htmlInstance = htmlTemplate.Replace("[[NAME]]", name);

    var pdf = renderer.RenderHtmlAsPdf(htmlInstance);

    pdf.SaveAs(name + ".pdf");
}

using HandlebarsDotNet;

// A Handlebars template with two placeholders
var source =
    @"<div class=""entry"">
        <h1>{{title}}</h1>
        <div class=""body"">
            {{body}}
        </div>
    </div>";

// Compile it once, then fill it with any object that has matching properties
var template = Handlebars.Compile(source);

var data = new { title = "My new post", body = "This is my first post!" };

string html = template(data);

// html now contains:
//
// <div class="entry">
//   <h1>My new post</h1>
//   <div class="body">
//     This is my first post!
//   </div>
// </div>

using HandlebarsDotNet;

// A Handlebars template with two placeholders
var source =
    @"<div class=""entry"">
        <h1>{{title}}</h1>
        <div class=""body"">
            {{body}}
        </div>
    </div>";

// Compile it once, then fill it with any object that has matching properties
var template = Handlebars.Compile(source);

var data = new { title = "My new post", body = "This is my first post!" };

string html = template(data);

// html now contains:
//
// <div class="entry">
//   <h1>My new post</h1>
//   <div class="body">
//     This is my first post!
//   </div>
// </div>

using HandlebarsDotNet;
using IronPdf;

// Fill the Handlebars template, then render the resulting HTML
var template = Handlebars.Compile("<h1>{{title}}</h1><p>{{body}}</p>");
string html = template(new { title = "My new post", body = "This is my first post!" });

var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderHtmlAsPdf(html);

pdf.SaveAs("Handlebars.pdf");

using HandlebarsDotNet;
using IronPdf;

// Fill the Handlebars template, then render the resulting HTML
var template = Handlebars.Compile("<h1>{{title}}</h1><p>{{body}}</p>");
string html = template(new { title = "My new post", body = "This is my first post!" });

var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderHtmlAsPdf(html);

pdf.SaveAs("Handlebars.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// The document body, rendered from a web page
var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf/");

// Prepend an existing PDF as the cover page. Merge returns a new document.
var cover = PdfDocument.FromFile("CoverPage.pdf");
var pdfMerged = PdfDocument.Merge(cover, pdf);

pdfMerged.SaveAs("Combined.pdf");

using IronPdf;

var renderer = new ChromePdfRenderer();

// The document body, rendered from a web page
var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf/");

// Prepend an existing PDF as the cover page. Merge returns a new document.
var cover = PdfDocument.FromFile("CoverPage.pdf");
var pdfMerged = PdfDocument.Merge(cover, pdf);

pdfMerged.SaveAs("Combined.pdf");

using IronPdf;
using IronPdf.Editing;

var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf");

// Stamp every page with a red "SAMPLE" in the middle, rotated 30 degrees at 50% opacity.
// The watermark is HTML, so any markup, styling or image can be used.
pdf.ApplyWatermark(
    "<h2 style='color:red; font-size:50px'>SAMPLE</h2>",
    rotation: 30,
    opacity: 50,
    verticalAlignment: VerticalAlignment.Middle,
    horizontalAlignment: HorizontalAlignment.Center);

pdf.SaveAs(@"C:\Path\To\Watermarked.pdf");

using IronPdf;
using IronPdf.Editing;

var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf");

// Stamp every page with a red "SAMPLE" in the middle, rotated 30 degrees at 50% opacity.
// The watermark is HTML, so any markup, styling or image can be used.
pdf.ApplyWatermark(
    "<h2 style='color:red; font-size:50px'>SAMPLE</h2>",
    rotation: 30,
    opacity: 50,
    verticalAlignment: VerticalAlignment.Middle,
    horizontalAlignment: HorizontalAlignment.Center);

pdf.SaveAs(@"C:\Path\To\Watermarked.pdf");