The related libraray used in my environment: Jaspersoft : jasperreports-6.3.0.jar jasperreports-fonts-6.1.1.jar javaSE-1.6 Java application: jasperreports-4.7.0.jar jasperreports-fonts-6.1.1.jar javaSE-1.6 As my java application must run under Java1.6, I include jasperreports-4.7.0.jar in my java application. The bold, itlatic, font are working well with the exception with font size. Any advise? Thanks.