Ironpdf License — Key

On your server or container, set an environment variable:

IronPDF previously allowed free use for development with a watermark, but starting from , a valid license key (even a free trial key) is required to run the library in any project. Without one, the library will throw a LicensingException . ironpdf license key

QuestPDF is a modern, open-source library designed specifically for generating PDF documents using a fluent, code-first layout engine. It focuses on high performance and precise layout control. Note that QuestPDF uses the Community License (free for small companies and individuals) alongside paid commercial tiers for larger enterprises. 2. PdfSharp / MigraDoc On your server or container, set an environment

For more information, visit the IronPDF Licensing Documentation. It focuses on high performance and precise layout control

When you are ready to deploy your application, you should purchase a license from the IronPDF licensing page . After completing the purchase (you can choose to pay by credit card or request an invoice), Iron Software will email you your unique license key. This is a long string of characters that typically ends with a support expiration date.

Immediately log into the Iron Software portal and "Regenerate" your license key. This invalidates the old key instantly. Deploy the new key to your servers.

Never commit your license key to public repositories (GitHub, GitLab). Use or environment variables .