Free clip art is available online at Openclipart and Clker.com. Both websites feature free-to-use clip art that is royalty free and in the public domain.
Openclipart has over 68,000 unique images available for use as of April 2015, while Clker.com does not keep a tally of its image database. Additionally, Openclipart has a forum where users upload requests for specific images and other users fulfill those requests. Clker.com features a number of tools that make it easier for users to contribute, including a vectorizer. Both websites source clip art from user bases, with many images created by users and others taken from historical sources in the public domain.