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  3. Apply a license key in IronOCR

How to Apply a License Key in IronOCR

January 19, 2022
Updated  June 1, 2025

The license key is a long string that ends with an expiry date. Please ensure this is copied correctly, with no spaces.

IRONOCR-MYLICENSE-KEY-1EF01-RENEW.SUPPORT.01.JAN.2050

The most robust method of applying a license key is directly in your code, before the library is called.

// Set the license key for IronOCR before using the library
IronOcr.Installation.LicenseKey = "IRONOCR-MYLICENSE-KEY-RENEW.SUPPORT.01.JAN.2050";
// Set the license key for IronOCR before using the library
IronOcr.Installation.LicenseKey = "IRONOCR-MYLICENSE-KEY-RENEW.SUPPORT.01.JAN.2050";
' Set the license key for IronOCR before using the library
IronOcr.Installation.LicenseKey = "IRONOCR-MYLICENSE-KEY-RENEW.SUPPORT.01.JAN.2050"
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For more options, including setting the license key in web.config and appsettings.json, please see this FAQ page for more information:

IronOCR License Keys FAQ