Is it safe to travel/visit France?
Yes, very safe. Despite recent terrorist events, France is a big country with an excellent police force. The chance that you are hurt or killed by a terrorist attempt is lower than the chance that you get killed putting on your socks (a true statistic).
Apart from some areas, which are definitely not touristy, most of France will welcome you with open arms. The areas you will not want to visit (outside of Paris) are the Marseilles suburbs, or any “projects”-type parts of a big city.