When meemoo welcomed a Wikimedian in Residence for the first time, the goal seemed clear: make a large part of its Art in Flanders collection available on Wikimedia platforms. Six months later, the results tell a much richer story. More than 12,000 images were uploaded to Wikimedia Commons , linked with structured data on Wikidata , and gradually integrated into Wikipedia articles. But according to Bart Magnus from meemoo, the most significant impact happened behind the scenes. “Working at scale forced us to look critically at our own data,” he explains. “We discovered inconsistencies and gaps that we hadn’t noticed before. Improving our metadata turned out to be just as valuable as sharing the images themselves.” For Wikimedian in Residence Didier Mellaerts-Avila, the experience was equally transformative. “I underestimated how central metadata would be,” he reflects. “You’re not just uploading images, you’re building connections between datasets, platforms, and communities.…