QR codes

Engrave-ready QR codes at an exact physical size. On light-marking materials like slate, the light areas are burned instead, so the finished code still reads dark-on-light and scans.

Content

Link

Error correction

Module style

Size (incl. quiet zone)

Quiet zone

modules

Material

Burn the light areas (invert)Off: the dark modules are burned. Turn on for materials where the laser leaves a light mark.

Laser / DPI

DPI

Download

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300 × 300 px · 30.0 × 30.0 mm · 25×25 modules · 0.91 mm each

Modules are 0.91 mm: comfortably scannable. Test-scan the preview with your phone before burning.

Tips for codes that scan

Keep the quiet zone clean: no frame, grain line or edge inside it.
On slate, anodized aluminium and painted tile the burn is light, so keep “Burn the light areas” on.
Wood darkens unevenly. Use Q or H error correction and a size where modules are 0.8 mm or more.
Short links make smaller, sturdier codes than long ones.