Krk Island in Croatia is generally safe for solo female travelers. Like any destination, it's advisable to exercise basic safety precautions such as avoiding isolated areas after dark and always maintaining a clear sense of your surroundings. The locals are generally friendly, and English is widely spoken, which makes getting help easier if necessary. The island is also relatively small and easy to navigate, reducing the likelihood of getting lost. However, minor pickpocketing incidents can occasionally occur in tourist hotspots, so it's advisable to keep your personal belongings secure.