https://superuser.com/questions/1420001/is-it-possible-to-create-a-qr-code-using-text

Sous Linux : qrencode

https://www.fr.linuxfromscratch.org/view/blfs-old/general/qrencode.html

qrencode -t UTF8 'https://superuser.com/questions/1420001/is-it-possible-to-write-a-qr-code'
qrencode -t ANSIUTF8 'https://superuser.com/questions/1420001/is-it-possible-to-write-a-qr-code'