How to Convert HTML to PDF in .NET: iTextSharp, PdfSharp, or Other Options?

.NET HTML to PDF Conversion: Evaluating iTextSharp, PdfSharp, and Other Libraries

Generating PDFs from HTML in .NET often presents challenges, particularly with libraries like iTextSharp which can struggle with accurate table rendering. This article explores several solutions to overcome these issues and create clean, well-formatted PDFs.

PdfSharp's HTML Renderer: A Superior Alternative

PdfSharp's HTML Renderer emerges as a strong contender, offering a free, lightweight, and C#-friendly solution. Its robust table handling ensures consistent layout integrity, making it a highly recommended choice.

iTextSharp (Free Version): A Budget-Conscious Option

The free version of iTextSharp (versions up to 4.1.6) remains a viable option for simpler PDF generation needs. While lacking some advanced features of its paid counterparts, it provides a cost-effective solution for basic requirements.

wkhtmltopdf: Considerations for Enterprise Deployments

While wkhtmltopdf offers certain advantages, its suitability for enterprise applications is limited by several factors:

• Cross-platform inconsistencies: Compatibility issues can arise between 32-bit and 64-bit environments.
• Deployment complexities: Integration into hosted environments like Azure or Elastic Beanstalk can prove challenging.
• Security vulnerabilities: The need for writable file access introduces potential security risks.
• Performance bottlenecks: Operating as a separate process outside the application pool can impact performance and resource utilization.

Simplified Approaches: TuesPechkin and Rotativa

For less demanding projects, TuesPechkin and Rotativa offer streamlined workflows. Both integrate with wkhtmltopdf and provide easy C# integration. Rotativa further enhances MVC applications by enabling direct PDF generation from Razor views.

Choosing the right library depends on the project's specific needs and deployment environment. For reliable table rendering and a fully managed code solution, PdfSharp's HTML Renderer is highly recommended. The free iTextSharp provides a budget-friendly alternative for basic needs, while TuesPechkin and Rotativa simplify the process for specific scenarios.

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