QR code
中文

Content

Style

Pattern

Corner frames

Corner centres

Colour

Pattern
To
Palette
Background

Photo underneath

The photo shows through, and the pattern turns into little dots on top. Bright, not-too-busy photos scan best.

Logo in the middle

A PNG with a transparent background looks best. The image stays on this device.

Backing

Frame

Advanced

Error correction

How much of the code can be covered or smudged and still read. Higher holds up better, but the dots get smaller and there are more of them. Auto uses M normally, H with a logo or photo, and Q for thinner patterns.

Everything is drawn on this device. Nothing gets sent anywhere.