Images are one of the many types of media used on Wikipedia and may be photos, drawings, logos, or graphs. All images used must be legal in the United States, where Wikimedia's servers are located. Images are stored on the Wikipedia website or the partner Wikimedia Commons website. All free content is stored on "Commons" and images that have more onerous copyright restrictions are stored on Wikipedia, under a fair use rationale. Also, images that are used on the Main Page have a local version to prevent vandalism from appearing. Editors can also choose to have a local version stored on Wikipedia.