Ironpdf - License Key

Use code with caution. Troubleshooting Common Licensing Issues

bool isLicensed = IronPdf.License.IsLicensed; Console.WriteLine($"Is IronPDF licensed in this session? isLicensed");

License.LicenseKey = "IRONPDF-YOUR-LICENSE-KEY-HERE" ironpdf license key

Adding PDF generation and manipulation capabilities to your .NET applications is a common requirement, and IronPDF has emerged as a powerful commercial library to meet this need. However, before you can leverage its full capabilities—like converting HTML to PDFs, merging documents, or adding digital signatures—you must properly activate it with a valid license key. This process removes the trial watermark, unlocks all features, and ensures you are compliant with the library’s terms of service.

For .NET (C#):

Never hard-code keys in source control. Use Environment Variables.

If you prefer not to hardcode your key, you can use your project's configuration files: Applying Software License Keys | IronPDF .NET 10 Use code with caution

IronPDF is well-regarded for its developer-friendly, . This means that when you purchase a license, it’s a one-time payment that allows you to use the specific version of the library you bought for an unlimited time, without any recurring fees.

The free trial version of IronPDF adds a "Trial Watermark" to all generated PDF documents. Applying a license key removes this permanently. Use Environment Variables