PuppeteerSharpHTML 到 PDF 的实现

PuppeteerSharp 需要使用浏览器生命周期管理的异步模式：

// NuGet: Install-Package PuppeteerSharp
using PuppeteerSharp;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var browserFetcher = new BrowserFetcher();
        await browserFetcher.DownloadAsync();

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });

        await using var page = await browser.NewPageAsync();
        await page.SetContentAsync("<h1>Hello World</h1><p>This is a PDF document.</p>");
        await page.PdfAsync("output.pdf");
    }
}

// NuGet: Install-Package PuppeteerSharp
using PuppeteerSharp;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var browserFetcher = new BrowserFetcher();
        await browserFetcher.DownloadAsync();

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });

        await using var page = await browser.NewPageAsync();
        await page.SetContentAsync("<h1>Hello World</h1><p>This is a PDF document.</p>");
        await page.PdfAsync("output.pdf");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

这种模式要求

• 首次使用时下载 Chromium 二进制文件（约 300MB
• 启动浏览器实例
• 创建页面上下文
• 通过 await using 模式管理浏览器清理
• 处理潜在的长期记忆积累

IronPDFHTML 到 PDF 的实现

IronPdf 提供精简的同步 API：

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1><p>This is a PDF document.</p>");
        pdf.SaveAs("output.pdf");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1><p>This is a PDF document.</p>");
        pdf.SaveAs("output.pdf");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

IronPDF 方法完全消除了浏览器生命周期管理。 ChromePdfRenderer 类封装了渲染引擎，RenderHtmlAsPdf 在单个方法调用中处理转换。 无需BrowserFetcher.DownloadAsync()--渲染引擎会自动捆绑。

PuppeteerSharpURL 转换

// NuGet: Install-Package PuppeteerSharp
using PuppeteerSharp;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var browserFetcher = new BrowserFetcher();
        await browserFetcher.DownloadAsync();

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });

        await using var page = await browser.NewPageAsync();
        await page.GoToAsync("https://www.example.com");
        await page.PdfAsync("webpage.pdf");
    }
}

// NuGet: Install-Package PuppeteerSharp
using PuppeteerSharp;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var browserFetcher = new BrowserFetcher();
        await browserFetcher.DownloadAsync();

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });

        await using var page = await browser.NewPageAsync();
        await page.GoToAsync("https://www.example.com");
        await page.PdfAsync("webpage.pdf");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

PuppeteerSharp 的 URL 转换遵循相同的异步浏览器生命周期模式，在生成 PDF 之前使用 GoToAsync 进行导航。

IronPDFURL 转换

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");
        pdf.SaveAs("webpage.pdf");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");
        pdf.SaveAs("webpage.pdf");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

IronPDF 的RenderUrlAsPdf方法通过一次调用处理导航和渲染，并内置智能等待页面内容。

PuppeteerSharp自定义设置

// NuGet: Install-Package PuppeteerSharp
using PuppeteerSharp;
using PuppeteerSharp.Media;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var browserFetcher = new BrowserFetcher();
        await browserFetcher.DownloadAsync();

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });

        await using var page = await browser.NewPageAsync();
        await page.SetContentAsync("<h1>Custom PDF</h1><p>With landscape orientation and margins.</p>");

        await page.PdfAsync("custom.pdf", new PdfOptions
        {
            Format = PaperFormat.A4,
            Landscape = true,
            MarginOptions = new MarginOptions
            {
                Top = "20mm",
                Bottom = "20mm",
                Left = "20mm",
                Right = "20mm"
            }
        });
    }
}

// NuGet: Install-Package PuppeteerSharp
using PuppeteerSharp;
using PuppeteerSharp.Media;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var browserFetcher = new BrowserFetcher();
        await browserFetcher.DownloadAsync();

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true
        });

        await using var page = await browser.NewPageAsync();
        await page.SetContentAsync("<h1>Custom PDF</h1><p>With landscape orientation and margins.</p>");

        await page.PdfAsync("custom.pdf", new PdfOptions
        {
            Format = PaperFormat.A4,
            Landscape = true,
            MarginOptions = new MarginOptions
            {
                Top = "20mm",
                Bottom = "20mm",
                Left = "20mm",
                Right = "20mm"
            }
        });
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

PuppeteerSharp 使用基于字符串的边距值和传递给 PdfAsync 方法的 PdfOptions 对象。

IronPDF自定义设置

// NuGet: Install-Package IronPdf
using IronPdf;
using IronPdf.Rendering;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
        renderer.RenderingOptions.PaperOrientation = PdfPaperOrientation.Landscape;
        renderer.RenderingOptions.MarginTop = 20;
        renderer.RenderingOptions.MarginBottom = 20;
        renderer.RenderingOptions.MarginLeft = 20;
        renderer.RenderingOptions.MarginRight = 20;

        var pdf = renderer.RenderHtmlAsPdf("<h1>Custom PDF</h1><p>With landscape orientation and margins.</p>");
        pdf.SaveAs("custom.pdf");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using IronPdf.Rendering;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
        renderer.RenderingOptions.PaperOrientation = PdfPaperOrientation.Landscape;
        renderer.RenderingOptions.MarginTop = 20;
        renderer.RenderingOptions.MarginBottom = 20;
        renderer.RenderingOptions.MarginLeft = 20;
        renderer.RenderingOptions.MarginRight = 20;

        var pdf = renderer.RenderHtmlAsPdf("<h1>Custom PDF</h1><p>With landscape orientation and margins.</p>");
        pdf.SaveAs("custom.pdf");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

IronPdf 通过 RenderingOptions 属性使用以毫米为单位的数字页边距值，提供清晰的单位语义。 渲染器可以一次性配置，并在多次转换中重复使用。

PuppeteerSharp的优势

• 通过 Chromium 引擎支持现代 CSS3
• 丰富的浏览器交互，用于刮擦和测试
• 直接移植 Google 的 Puppeteer API
• 免费和开源

PuppeteerSharp生成 PDF 的限制

• 300MB 以上的 Chromium 依赖性
• 持续负载下的内存泄漏
• 用于文档生成的浏览器自动化开销
• 不符合 PDF/A 或 PDF/UA 标准
• 无 PDF 操作能力
• 需要复杂的异步模式

IronPDF的优势

• 专为生成和处理 PDF 而设计
• 无需下载外部浏览器
• 自动内存管理
• 全面的功能集（签名、安全、表单）
• 支持 PDF/A 和 PDF/UA 合规性
• 同步和异步 API 模式
• 专业支持与文档

IronPDF注意事项

• 商业许可模式
• 特别侧重于 PDF 操作（非浏览器自动化）