IronPDF automatically detects this key at runtime when the application starts up.
Even with the correct key, developers often encounter issues. Here is how to fix the most common "IronPDF license key" errors.
Best for individual developers or small projects. It typically covers one developer and one internal application. ironpdf license key
Check if your 30-day trial period has concluded.
). It must be applied at the start of your application before any calls to the IronPDF library are made. Option A: In Code (Recommended) Add this line to your application's startup method (e.g., Global.asax in Web Forms, or the start of your Python/Node.js script). IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"; IronPDF automatically detects this key at runtime when
You have the key. Now, where does it go? You must add the license key to your application's startup routine. Iron Software recommends setting the key once before using any PDF generation methods.
This post is not sponsored by Iron Software. Always refer to the official licensing documentation for the most up-to-date terms. Best for individual developers or small projects
Use the built‑in License.isLicensed() method to confirm that your key is active. This method returns false if no key is set, the key has expired, or if an invalid key has been applied.
IronPDF’s pricing is simple and transparent. All plans are , which allows you to continue using the library for the lifetime of your project without worrying about renewal fees.
Copy-pasting the license key from an email often results in hidden spaces. If you experience licensing errors, verify that no extra spaces or line breaks are included in the string.
Features unlimited developers and deployment locations, ideal for large-scale enterprise applications. How to Get an IronPDF License Key