However, if you are using it for , you are legally required to purchase a license and enter a registration code. How to Register IrfanView
If you're having trouble finding a valid registration code, I recommend purchasing one from the official IrfanView website or an authorized reseller to ensure you're getting a legitimate key.
Whether you actually need a code depends entirely on how you use the software:
IrfanView registration codes are required for users who intend to use the software for commercial purposes
Зарегистрирован в Торговом реестре Республики Беларусь 12.01.2015.