npwatermarks.npp is a NPWatermarks.npp
belonging to NPWatermarks
from Nitro PDF
Non-system processes like npwatermarks.npp originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.