C# PDF Signature
using IronPdf;
// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;
// Instantiate Renderer
var renderer = new ChromePdfRenderer();
// Create a PDF from a HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");
// Export to a file or Stream
pdf.SaveAs("output.pdf");
// Advanced Example with HTML Assets
// 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");Install-Package IronPdf
In a recent live session, Iron Software’s Regan Pun (Software Engineer) teamed up with Craig Beaumont (Sales Lead) to walk through how developers can build accurate, production-ready PDF solutions using IronPDF. The webinar covered the full range of core features from HTML-to-PDF rendering to digital signing showing just how easy it is to integrate powerful PDF functionality into any .NET application.
Regan began the demo by setting up a clean architecture with a class library, Web API, and Blazor frontend to demonstrate HTML-to-PDF conversion.
With just one method, RenderHtmlAsPdfAsync(), IronPDF renders HTML files into sharp, accurate PDF documents. He showed how the output is nearly identical to what Chrome would generate, making IronPDF a great choice for developers needing pixel-perfect rendering.
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📌 Key Features Demoed:
Next, Regan showed how to stamp watermarks (images or text) on PDF pages with full control over:
This is especially useful for generating draft documents, confidential labels, or visual document tracking.
Using IronPDF’s merge functionality, Regan demonstrated how to combine files like invoices and terms & conditions (ULAs) into a single PDF, all in just a few lines of C#. This feature is perfect for industries like legal, finance, or procurement that deal with document packaging.
To round out the demo, Regan walked through adding digital signatures using PFX certificates. The signed PDF was validated and rendered correctly in Adobe Acrobat, showing details like signer name, location, and approval reason.
💼 This feature supports industries with strict compliance needs such as:
Craig highlighted how IronPDF is actively used in:
IronPDF is trusted by organizations including NASA for its security, performance, and compliance with standards like PDF/A.
IronPDF gives .NET developers the tools to create, edit, and secure PDFs easily on desktop, web, or cloud. Whether you're automating invoices or building enterprise reports, IronPDF is ready to deliver production-grade results.
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No credit card or account creation required
Your trial key should be in the email.
If it is not, please contact
support@ironsoftware.com
Get started for FREE
No credit card required
Test in production without watermarks.
Works wherever you need it to.
Get 30 days of fully functional product.
Have it up and running in minutes.
Full access to our support engineering team during your product trial
Licenses from $749. Have a question? Get in touch.
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