Dithered QR Grid

Remix of andrewt.net's dithered QR codes — every variant at once, scan-tested.

Content

Drop or paste an image anywhere.

Grid axes Across Down

Base options (when not an axis) ECC Mask Style Rotation Invert (light-on-dark)

Reliability Min version Subpixels Dot size Quiet zone Full-size finder patterns Full-size timing patterns Full-size alignment markers Pre-diffuse QR dots into image Scan-test every cell (jsQR)

Bigger dots + full-size patterns + higher ECC = more reliable, less image. Score n/4 = how many downscale levels still decode.

Image adjustments Gamma Bright Contrast Min lum Max lum

Display Cell size