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Image Mask

Image → QR-pixel mask (Version 6-L, 41×41)

Source Image

Choose Image…

No file loaded

Placement

X offset (modules) 0.0

Y offset (modules) 0.0

Scale (modules / image-max-dim) 1.000

Preview opacity 0.80

Thresholds

Dark / light split (L*) 50

Perceptual lightness (CIE L*, 0=black, 100=white). 50 is mid-gray. Cells with opaque pixels darker than this become dark; lighter become light.

Don't-care below alpha 64

Only source of don't-care now: transparent cells let the QR choose. Set to 255 to force every cell dark or light.

Center sample (% of module) 20

Invert (swap dark/light)

Show sample regions on preview

Show QR reference pattern

Export mask

Legend: 0 = light, 1 = dark, ? = don't care.

Generate QR (POST /qr)

URL to encode

API endpoint

Bearer token

Mask

Module px

Border

"CM" branding stripe

Send mask as embed

Colorize (diagnostic, not scannable)

Live paintable overlay

Overlay image on generated QR

Image overlay opacity 1.00

Image over QR grid

Drag to reposition · scroll to scale · blue outlines mark QR functional patterns

Ternary mask (41×41)

Dark: 0 Light: 0 Don't care: 0

Generated QR

Click "Generate QR" to call the API