Kicad plugin to make all references invisible

make_refs_invisible.py

import pcbnew

class MakeRefsInvisible(pcbnew.ActionPlugin, object):
    def defaults(self):
        self.name = "Make references invisible"
        self.category = "Modify PCB"
        self.description = "Make all footprint references invisible."

    def Run(self):
        b = pcbnew.GetBoard()
        for m in b.GetModules():
            m.Reference().SetVisible(False)

MakeRefsInvisible().register()