Films and TV shows online also have age ratings to show what is suitable for children. Look out for these to see what is suitable for you.
On websites and social media it is possible to come across things that can be very upsetting or scary, like animals or people being hurt, upsetting stories in the news or people swearing and saying abusive things.
Just as there are sites and apps aimed for children, there are also things online that are just for adults, including dating and gambling apps. These are not suitable for children.