The largest painting made by footprints measures 1,684.75 m2 (18,134 ft² 71 in²) and was created by IN56 and Loving Power (Hong Kong), in Hong Kong, China, on 3 June 2012.

The painting was created in an event to launch the Mark My Heartprint community campaign to raise social awareness and concern for mental health issues. Many of the participants are directly affected by these issues. The image is supposed to show community and family support through depicting a parent and child on a rainbow bridge.