Ironpdf License Key Jun 2026

The is your gateway to professional, watermark-free PDF generation in .NET applications. Whether you are a solo developer building a side project or an enterprise architect deploying to thousands of servers, understanding how to obtain, apply, and troubleshoot your license key is essential.

Let's walk through a complete .NET 8 Console App that securely uses an IronPDF license key.

Module Program Sub Main(args As String()) ' Apply the license key IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY-HERE" ironpdf license key

Double-check if your 30-day trial key has expired.

Note: You must also choose between SaaS/OEM redistribution add-ons if you plan to package IronPDF into software sold to third parties. 🛠 How to Install and Activate Your IronPDF License Key The is your gateway to professional, watermark-free PDF

var builder = new ConfigurationBuilder() .AddJsonFile("appsettings.json") .AddEnvironmentVariables();

| Aspect | Detail | |--------|--------| | | Remove watermark, enable production use | | Where to get | IronSoftware purchase or free trial | | How to set | IronPdf.License.LicenseKey = "key" | | Verification | IronPdf.License.IsValidLicense | | Common mistake | Setting key after generating first PDF | | Support | IronSoftware support portal (with valid license) | Module Program Sub Main(args As String()) ' Apply

: You can request a 30-day free trial key from the IronPDF Licensing Page to test the full version without watermarks.

// After activation, you can safely use all IronPDF features var renderer = new ChromePdfRenderer(); var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>"); pdf.SaveAs("output.pdf");

The IronPDF license key is a unique string that activates the library's full feature set. Its primary function is to remove the evaluation watermark from generated PDFs and to unlock advanced functionalities for commercial deployment. It is a commercial, paid library, and the license key serves as the mechanism to enforce its licensing terms, which include perpetual licensing options as well as support and maintenance packages.

Trial keys expire exactly 30 days after generation. If your trial has ended, your output will automatically revert to featuring the trial watermark. Environment Variable Issues