Content filtering is a tool used to ensure that websites, emails, and other forms of communication are appropriate for certain audiences. It can be used to block access to inappropriate content, as well as filter out offensive language or images. Content filtering is often used in schools and workplaces to keep students and employees safe from accessing potentially dangerous sites. It can also be used in homes to protect children from viewing inappropriate material online. Content filtering allows users to customize the level of protection they want, so they can choose what type of content they would like blocked or allowed. This ensures that the user has control over what content their kids or employees have access to. Content filtering is an important part of online safety, allowing parents and employers to create a safe environment for their families and employees alike.