Jean-Frédéric Berthelot is a volunteer for Wikimedia, a movement supporting free educational content. Since 2005, he has been active on Wikipedia, the multimedia library Wikimedia Commons and more recently the Wikidata knowledge base. Among other things, he has worked with cultural institutions on sharing their collections online, and on the Wiki Loves Monuments project to document cultural heritage all over the world.

Besides his free-knowledge activities, he works as an infrastructure engineer for an Austrian start-up.