Ironpdf License: Key

When you are ready to deploy, you must purchase a license. Iron Software offers various tiers:

How to retrieve your paid key:

using IronPdf;
// Apply license key at application startup (e.g., Program.cs or Global.asax)
IronPdf.License.LicenseKey = "IRONPDF-YOUR-ACTUAL-KEY";
 ironpdf license key

Store keys in secrets manager, not source control. When you are ready to deploy, you must purchase a license

✅ Good:

License.LicenseKey = Environment.GetEnvironmentVariable("IRONPDF_KEY");

❌ Bad:

License.LicenseKey = "abc123-xyz"; // Hardcoded

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

Set a system variable named IRONPDF_LICENSE with your key as the value. IronPDF automatically reads this variable on startup without any code changes. How to retrieve your paid key: