The English Wikipedia is the English language edition of the Wikipedia online encyclopedia. English is the first language in which Wikipedia was written. It was started on 15 January 2001. It is the largest encyclopedia in the world, and the largest version of Wikipedia since April 2019. It has more than 6,085,700 articles as of May 2020. In October 2015, the total volume of the compressed texts of the English Wikipedia's articles added up to 11.5 gigabytes.