Why Choose IronPDF for HTML to PDF Conversion in C#?

When it comes to HTML to PDF conversion in C# .NET, developers need a solution that is fast, reliable, and easy to plug into their applications. Towards this end, IronPDF stands out as one of the best libraries that .NET developers can use.

Here are ten reasons why you should consider using IronPDF as your go-to for your next project.

1. Pixel-Perfect Rendering

IronPDF uses a headless Chromium engine to ensure that PDFs look exactly like the original web page. This means:

• No missing document formatting: IronPDF preserves all layout changes applied by CSS styles, fonts, and JavaScript.
• Create PDFs with complex layouts with confidence: IronPDF supports all HTML5 elements, CSS3 styles, and ES6 syntax reliably.
• High Fidelity Rendering : If you can build it in a web page, then you can show it as a PDF!

Need a PDF to match a webpage's appearance exactly? IronPDF does it with ease.

2. Simple, Developer-Friendly API

IronPDF's user-friendly API makes HTML to PDF conversion child's play.

Here's how you can Convert HTML to PDF in two lines of code:

using IronPdf;
var pdf = new ChromePdfRenderer().RenderHtmlAsPdf("<h1>Hello, IronPDF!</h1>");
pdf.SaveAs("output.pdf");

Advanced Example: Conversion with HTML assets

using IronPdf;

var Renderer = new IronPdf.ChromePdfRenderer();

// Load external html assets: Images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from 
var myAdvancedPdf = Renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");

myAdvancedPdf.SaveAs("html-with-assets.pdf");

3. Supports Multiple HTML Input Sources

IronPDF gives you flexibility in how you can approach HTML-to-PDF conversion. Choose between converting from any of these HTML sources into PDFs:

• Raw HTML strings
• Local HTML files
• Live web pages (URLs)

Example: Convert a Live Web Page to PDF

var pdf = new ChromePdfRenderer().RenderUrlAsPdf("https://example.com");
pdf.SaveAs("webpage.pdf");

Example: Convert a Local HTML file to PDF

var pdf = new ChromePdfRenderer().RenderHtmlFileAsPdf("example.html");
pdf.SaveAs("webpage.pdf");

4. Even More File Conversion Options

Need to convert other file types into PDFs? IronPDF can that as well!

Example: Convert Images to PDFs

var imageFiles = Directory.EnumerateFiles("assets").Where(f => f.EndsWith(".jpg") || f.EndsWith(".jpeg"));
ImageToPdfConverter.ImageToPdf(imageFiles).SaveAs("composite.pdf");

Example: Convert DOCX to PDF

PdfDocument pdf = new DocxToPdfRenderer().RenderDocxAsPdf("example.docx");
pdf.SaveAs("output.pdf");

Example: RTF to PDF

PdfDocument pdfFromRtfFile = new ChromePdfRenderer().RenderRtfFileAsPdf("example.rtf");
pdfFromRtfFile.SaveAs("output.pdf");

Example: Convert Markdown to PDF

PdfDocument pdfFromFile = new ChromePdfRenderer().RenderMarkdownFileAsPdf("report.md");
pdfFromFile.SaveAs("output.pdf");

Example: Convert TIFF to PDF

var pdf = ImageToPdfConverter.ImageToPdf("example.tif");
pdf.SaveAs("output.pdf");

Take your document management to the next level with IronPDF by converting from multiple document types to PDF!

5. Advanced Customization & Styling Options

IronPDF allows you to control every aspect of the rendered PDF, including:

• Custom margins, page sizes, headers, and footers
• Watermarks, page numbers, and digital signatures
• JavaScript execution before rendering for dynamic content

Example: Add a Custom Header & Footer

var Renderer = new ChromePdfRenderer();
var pdf = Renderer.RenderHtmlAsPdf("<h1>IronPDF Customization</h1>");

pdf.AddTextFooter("Generated using IronPDF", 10);
pdf.SaveAs("custom-footer.pdf");

6. High Performance & Scalability

IronPDF is optimized for speed and works seamlessly in multi-threaded environments.

Whether you’re generating a single PDF or processing thousands per hour, IronPDF ensures:

• Fast rendering speeds
• Low memory consumption
• Asynchronous PDF generation for better performance

Example: Async PDF Generation for Performance

var pdfTask = new ChromePdfRenderer().RenderHtmlAsPdfAsync("<h1>Async IronPDF</h1>");
await pdfTask;
pdfTask.Result.SaveAs("async-output.pdf");

7. Secure & Compliant

For enterprise applications that require security and compliance, IronPDF offers:

• Password protection & encryption
• Digital signatures for authentication
• Compliance with PDF/A & PDF/UA standards

Example: Generate a Password-Protected PDF

var pdf = new ChromePdfRenderer().RenderHtmlAsPdf("<h1>Secure PDF</h1>");
pdf.Security.Encrypt("userpass", "ownerpass", IronPdf.Security.Permissions.CanPrint);
pdf.SaveAs("secure.pdf");

8. Works Across All .NET Versions & Platforms

IronPDF is compatible with:

• .NET 9, 8, 7, 6, 5, Core, and Framework
• Web, Desktop, Console, and Cloud applications
• Windows, Linux, macOS, and Docker

9. Active Support & Regular Updates

IronPDF offers:

• 24/5 developer supports
• Frequent updates and new features
• Reliable documentation and a large community of developers

Need help? IronPDF’s support team is available via email and documentation.

10. More Affordable Than Competitors

IronPDF provides better value for money, then most well-known, premium library alternatives.

Compared to Aspose, Syncfusion, and PdfTron, IronPDF has:

• No complex licensing or hidden fees
• Lifetime license options
• Flexible pricing for individual developers and enterprises

Conclusion

If you're looking for a powerful, flexible, and easy-to-use HTML to PDF solution for your .NET application, IronPDF is an attractive library to consider.

Use IronPDF to enjoy:

• High-fidelity rendering
• Rich customization options
• Enterprise-grade security

Start using IronPDF today! Install via NuGet:

Install-Package IronPdf

Get a free trial at IronPDF.com