Ironpdf License Key -

The trial key has no limitations on functionality, allowing you to test all features in a live environment, and it will not watermark your PDFs during the evaluation period. However, a timer is in place, and after 30 days, you’ll need to purchase a full license to continue using the library beyond the trial.

bool isValid = IronPdf.License.IsValidLicense("IRONPDF-..."); Console.WriteLine(isValid ? "Valid" : "Invalid");

// Set once at application startup License.LicenseKey = "YOUR-LICENSE-KEY-HERE"; ironpdf license key

For live applications, internal business use, or SaaS deployment, you must purchase a commercial tier. Iron Software structures its pricing based on the number of developers, locations, and deployment needs: Covers 1 developer and 1 location.

When you are ready to deploy, you must purchase a license. Iron Software offers various tiers: The trial key has no limitations on functionality,

using IronPdf; class Program static void Main() // Apply the license key globally License.LicenseKey = "IRONPDF-YOUR-LICENSE-KEY-HERE"; // Validate that the key has been successfully applied if (License.IsValidLicense("IRONPDF-YOUR-LICENSE-KEY-HERE")) Console.WriteLine("IronPDF License is active."); Use code with caution. Method 4: Environment Variables (Cross-Platform)

| Aspect | Details | |--------|---------| | | IRONPDF-XXXX-XXXX-XXXX | | Where to set | IronPdf.License.LicenseKey at startup | | No key result | Trial mode with watermark | | Can I share my key? | No — tied to your organization | | CI/CD support | Yes — via env var or file | "Valid" : "Invalid"); // Set once at application

However, IronPDF also offers subscription-based options. A subscription typically includes continuous product updates, security patches, and access to Iron Software’s technical support team for its duration. You can extend or renew this subscription as needed.

And :

| Error | Likely Cause | Fix | |-------|--------------|-----| | License key not found | Key never set | Set License.LicenseKey before any PDF operation | | This license is for evaluation only | Trial key in prod | Buy production key | | The license key does not allow deployment on this server | Wrong deployment type | Buy correct tier (Cloud, OEM, or Standard) |

throw new Exception("Invalid IronPDF license key");