Just for the record before I forget: qrencode -s 1 -m 7 -o qr_noisebridge.png https://noisebridge.net/ && composite -size 45x40 qr_noisebridge.png xc:white qr_noisebridge_45x40.png This gives a nicely framed QR to send to the big FT, and it works ;-) https://twitter.com/mmu_man/status/741516069257383936 François.