SFW stands for "safe for work" and is used to describe content that is appropriate to view in a formal setting, such as a workplace. This means that the content being referred to is not inappropriate, sexual, violent, or graphic in nature. SFW content contains neither graphic nor adult imagery, such as content that would not be offensive to employers or co-workers. SFW is the opposite of NSFW (not safe for work), which is used to mark links to content, videos, or website pages that the viewer may not wish to be seen viewing in a public, formal, or controlled environment.