Wikipedia is a widely recognized free online encyclopedia that was founded in January 2001 by Jimmy Wales, Larry Sanger, and a group of enthusiastic contributors. It offers a platform where anyone can edit and improve articles, fostering a collaborative environment that spans over 285 languages, including Indonesian. The Indonesian version of Wikipedia launched in 2003 and has since grown significantly, featuring more than 735,000 articles and nearly 1.6 million registered users.

Managed by the Wikimedia Foundation, a non-profit organization, Wikipedia operates under a dual license of Creative Commons and GFDL, ensuring that its content remains freely accessible and shareable. In addition to the main encyclopedia, the Wikimedia Foundation supports various projects such as Wikiquote, Wiktionary, and Wikimedia Commons, enhancing the availability of free knowledge. Users are encouraged to contribute their expertise and expand the wealth of information available, making Wikipedia an essential resource for learners and researchers worldwide.