Printing hides these controls — only the sticker goes on the page.
Start with the destination — that alone generates a code. The four text fields below are optional; leave any of them blank and that line is left off the sticker entirely.
Linking to something on this machine? Use its LAN IP, not
localhost — on a phone, localhost points
at the phone itself.
Keep strong contrast against the foreground or scanners will struggle.
Pick any image — PNG or SVG with a transparent background works best. The modules underneath are cut away, so the logo sits in the code rather than on top of it.
Cutting a logo this large out of the code needs High error correction to stay scannable.
Higher levels survive smudges and a centred logo, at the cost of a denser code.
The blank margin around the code. Below 4 modules, some scanners fail.