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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 .
The most common and robust way to activate IronPDF is by setting the LicenseKey property in your application's startup code. ironpdf license key
Applying an IronPDF license key enables full functionality and removes watermarks, with the most useful feature being the flexible, single-line configuration at application startup . IronPDF previously allowed free use for development with
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