Small square.
Right size.

Measure twice.
Scan a few times.

Why the URL changes the result

Longer encoded content can require more modules. At a fixed module size, more modules mean a larger printed symbol. This calculator encodes your actual link with the same Q error-correction level as our free creator.

Use SVG when you can

Vector artwork keeps module edges crisp. If your workflow needs pixels, use the calculated dimensions as a starting point and avoid resizing the image repeatedly or applying JPEG compression.

Make one real sample first

Print at the intended size on the intended surface. Test different phones, angles, lighting, and the actual viewing distance. Gloss, folds, curvature, and motion can all make a perfect digital code harder to read.