How to Add a Digital Signature to a PDF in C# Using iTextSharp | IronPDF Curtis Chau Updated:March 17, 2026 Download IronPDF NuGet Download DLL Download Windows Installer Start Free Trial Copy for LLMs Copy for LLMs Copy page as Markdown for LLMs Open in ChatGPT Ask ChatGPT about this page Open in Gemini Ask Gemini about this page Open in Grok Ask Grok about this page Open in Perplexity Ask Perplexity about this page Share Share on Facebook Share on X (Twitter) Share on LinkedIn Copy URL Email article Watch this video to discover the best C# library for adding digital signatures to PDFs, and enhance your document security and authenticity effortlessly. more... In this informative video, we delve into the process of adding digital signatures to PDF documents using C#. The video features a side-by-side comparison of two popular libraries: IronPDF and iTextSharp. It examines various aspects such as ease of implementation, performance, and feature set to help developers make an informed choice. IronPDF is known for its user-friendly interface and robust features, making it a popular choice for those who value simplicity and efficiency. On the other hand, iTextSharp offers a rich set of functionalities that might appeal to developers who require more advanced capabilities. The video walks viewers through the steps of integrating digital signatures using each library, demonstrating their pros and cons in real-world scenarios. By the end of the video, viewers will have a clear understanding of which library better suits their needs for enhancing document security and authenticity through digital signatures.
Updated March 17, 2026 How to Access All PDF DOM Objects Using IronPDF in C# | IronPDF This video tutorial demonstrates how to convert an entire HTML project into a PDF using IronPDF. Perfect for developers, it simplifies the process, allowing you to generate PDFs directly from HTML packaged in a ZIP file, ensuring accurate rendering and easy integration. Read More
Updated March 17, 2026 How to Embed Images with Data URIs in C# | IronPDF This video tutorial demonstrates how to convert HTML content, along with its assets like CSS and images, from a ZIP file into a PDF format. It provides a step-by-step guide to extract and convert the contents effectively, making it ideal for anyone looking to streamline their document management process. Read More
Updated March 17, 2026 How to Render HTML ZIP File to PDF in C# | IronPDF This video tutorial guides you through the process of converting HTML content from a ZIP archive into a PDF using C# and IronPDF. By the end of the tutorial, you'll be able to efficiently handle HTML to PDF conversions directly within your C# applications, optimizing your workflow. Read More
Updated March 17, 2026 How to Transform PDF Pages Using IronPDF in C# | IronPDF This video tutorial provides a comprehensive guide on using IronPDF for .NET to manipulate PDF pages. Learn essential techniques such as rotating, scaling, and repositioning pages within existing PDF documents, enhancing your document management and editing capabilities. Read More
Updated January 10, 2026 How to Convert HTML to PDF with C# in .NET 10 | IronPDF This video tutorial guides you through the process of generating high-quality PDF documents directly from HTML using IronPDF for .NET. You will learn how IronPDF effectively renders HTML, CSS, and images to produce professional PDFs with ease and efficiency. Read More
Updated March 17, 2026 How to Convert QR Code to PDF in C# | IronPDF Discover how to generate and insert QR codes into PDFs programmatically with IronPDF. This tutorial walks you through the process, making it easy for developers to automate PDF creation with embedded QR codes. Read More
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