Volunteer authors share their knowledge for free through the free encyclopaedia Wikipedia by correcting errors, adding photographs, ensuring information is kept up-to-date as well as writing entire articles. Without the tireless efforts of may thousands of volunteers, projects such as Wikipedia simply could not exist. This is why providing support to volunteers is a core element of the work done by Wikimedia Deutschland. For example, in 2017, numerous events were held where contributors could get together in person – the largest of these was WikiCon in Leipzig, which was attended by 287 volunteers. We also provide support for establishing local Wikipedia offices which are now facilitating the work of our volunteers in Cologne, Hamburg, Munich and, since 2017, also in Berlin. A key area of focus in 2017 was our Wikipedia banner campaign. This was aimed at gaining new editors to help work on the free encyclopaedia.